Heidelberg University
Institute for theoretical physics
Maurits W. Haverkort

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====== Theory of spectroscopy, dynamics and numerical methods for complex materials ====== ===== Publications ===== ==== 2016 ==== * [73] S. Macke, J. E. Hamann-Borrero, R. J. Green, B. Keimer, G. A. Sawatzky, and M. W. Haverkort,\\ //Dynamical Effects in Resonant X-Ray Diffraction//,\\ [[http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.115501|Phys. Rev. Lett. 117, 115501 (2016)]], arXiv, {{ :publications:phys._rev._lett._2016_macke.pdf | }}. * [72] Y. Lu, A. Frano, M. Bluschke, M. Hepting, S. Macke, J. Strempfer, P. Wochner, G. Cristiani, G. Logvenov, H. U. Habermeier, M. W. Haverkort, B. Keimer, and E. Benckiser,\\ //Quantitative determination of bond order and lattice distortions in nickel oxide heterostructures by resonant x-ray scattering//,\\ [[http://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.165121|Phys. Rev. B 93, 165121 (2016)]], arXiv, {{ :publications:phys._rev._b_2016_lu.pdf | }}. * [71] C. Praetorius, M. Zinner, P. Hansmann, M. W. Haverkort, and K. Fauth,\\ //Exploring small energy scales with x-ray absorption and dichroism//,\\ [[http://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.165107|Phys. Rev. B 93, 165107 (2016)]], arXiv, {{ :publications:phys._rev._b_2016_praetorius.pdf | }}. * [70] Maurits W. Haverkort,\\ //Quanty for core level spectroscopy - excitons, resonances and band excitations in time and frequency domain//,\\ [[http://iopscience.iop.org/article/10.1088/1742-6596/712/1/012001|Journal of Physics: Conference Series 712, 012001 (2016)]], arXiv, {{ :publications:j._phys._conf._ser._2016_haverkort.pdf | }}. * [69] M. Hunault, V. Vercamer, Maurits W. Haverkort, Marie-Anne Arrio, C. Brouder, G. Calas, and A. Juhin,\\ //Tracking the signature of low symmetry environments in the XAS Kpre-edge//,\\ [[http://iopscience.iop.org/article/10.1088/1742-6596/712/1/012005|Journal of Physics: Conference Series 712, 012001 (2016)]], arXiv, {{ :publications:j._phys._conf._ser._2016_hunault.pdf | }}. ==== 2015 ==== * [68] Martin Sundermann, Fabio Strigari, Thomas Willers, Hannes Winkler, Andrey Prokofiev, James M. Ablett, Jean-Pascal Rue, Detlef Schmitz, Eugen Weschke, Marco Moretti Sala, Ali Al-Zein, Arata Tanaka, Maurits W. Haverkort, Deepa Kasinathan, Liu Hao Tjeng, Silke Paschen, and Andrea Severing,\\ //CeRu₄Sn₆: a strongly correlated material with nontrivial topology//,\\ [[http://www.nature.com/articles/srep17937|Nature scientific reports 5, 17937 (2015)]], arXiv, {{ :publications:scientific_reports_2015_sundermann.pdf | }}. * [67] J.-P. Rueff, J. M. Ablett, F. Strigari, M. Deppe, M. W. Haverkort, L. H. Tjeng, and A. Severing,\\ //Absence of orbital rotation in superconducting CeCu₂Ge₂//, \\ [[http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.201108|Phys. Rev. B 91, 201108 (2015)]], arXiv, {{ :publications:phys._rev._b_2015_rueff.pdf | }}. * [66] D. Kasinathan, K. Koepernik, L. H. Tjeng, and M. W. Haverkort,\\ //SmO thin films: A flexible route to correlated flat bands with nontrivial topology//, \\ [[http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.195127|Phys. Rev. B 91, 195127 (2015)]], arXiv, [pdf] {{ :publications:phys._rev._b_2015_kasinathan.pdf | }}. * [65] S. Agrestini, Z. Hu, C.-Y. Kuo, M. W. Haverkort, K.-T. Ko, N. Hollmann, Q. Liu, E. Pellegrin, M. Valvidares, J. Herrero-Martin, P. Gargiani, P. Gegenwart, M. Schneider, S. Esser, A. Tanaka, A. C. Komarek, and L. H. Tjeng,\\ //Electronic and spin states of SrRuO₃ thin films: An x-ray magnetic circular dichroism study//, \\ [[http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.075127|Phys. Rev. B 91, 075127 (2015)]], arXiv, {{ :publications:phys._rev._b_2015_agrestini.pdf | }}. * [64] F. Strigari, M. Sundermann, Y. Muro, K. Yutani, T. Takabatake, K.-D. Tsuei, Y. F. Liao, A. Tanaka, P. Thalmeier, M. W. Haverkort, L. H. Tjeng, and A. Severing,\\ //Quantitative study of valence and configuration interaction parameters of the Kondo semiconductors CeM₂Al₁₀ (M = Ru, Os and Fe) by means of bulk-sensitive hard x-ray photoelectron spectroscopy//, \\ [[http://www.sciencedirect.com/science/article/pii/S036820481500016X|J. Elec. Spec. Rel. Phen. 199, 56 (2015)]], arXiv, {{ :publications:journal_of_electron_spectroscopy_and_related_phenomena_2015_strigari.pdf | }}. ==== 2014 ==== * [63] S. Macke, A. Radi, J. E. Hamann-Borrero, A. Verna, M. Bluschke, S. Brück, E. Goering, R. Sutarto, F. He, G. Cristiani, M. Wu, E. Benckiser, H.-U. Habermeier, G. Logvenov, N. Gauquelin, G. A. Botton, A. P. Kajdos, S. Stemmer, G. A. Sawatzky, M. W. Haverkort, B. Keimer, and V. Hinkov,\\ //Element Specific Monolayer Depth Profiling//,\\ [[http://onlinelibrary.wiley.com/doi/10.1002/adma.201402028/abstract|Advanced Materials 26, 6545 (2014)]]. * [62] M. W. Haverkort, G. Sangiovanni, P. Hansmann, A. Toschi, Y. Lu and S. Macke,\\ //Bands, resonances, edge singularities and excitons in core level spectroscopy investigated within the dynamical mean-field theory//,\\ [[http://epljournal.edpsciences.org/articles/epl/abs/2014/23/epl16738/epl16738.html|Euro. Phys. Lett. 108 57004 (2014)]], arXiv, {{ :publications:europhys._lett._2014_haverkort.pdf | }}. * [61] Y. Lu, M. Höppner, O. Gunnarsson, and M. W. Haverkort,\\ //Efficient real frequency solver for dynamical mean field theory//,\\ [[http://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.085102|Phys. Rev. B 90 085102 (2014)]], arXiv, {{ :publications:phys._rev._b_2014_lu.pdf | }}. * [60] C. N. Veenstra, Z.-H. Zhu, M. Raichle, B. M. Ludbrook, A. Nicolaou, B. Slomski, G. Landolt, S. Kittaka, Y. Maeno, J. H. Dil, I. S. Elfimov, M. W. Haverkort, and A. Damascelli,\\ //Spin-Orbital Entanglement and the Breakdown of Singlets and Triplets in Sr₂RuO₄ Revealed by Spin- and Angle-Resolved Photoemission Spectroscopy//,\\ [[http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.127002|Phys. Rev. Lett. 112 127002 (2014)]], arXiv, {{ :publications:phys._rev._lett._2014_veenstra.pdf | }}. * [59] Z.-H. Zhu, C. N. Veenstra, S. Zhdanovich, M. P. Schneider, T. Okuda, K. Miyamoto, S.-Y. Zhu, H. Namatame, M. Taniguchi, M. W. Haverkort, I. S. Elfimov, and A. Damascelli,\\ //Photoelectron Spin-Polarization Control in the Topological Insulator Bi₂Se₃//,\\ [[http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.076802|Phys. Rev. Lett. 112 076802 (2014)]], arXiv, {{ :publications:phys._rev._lett._2014_zhu.pdf | }}. ==== 2013 ==== * [58] Krzysztof Wohlfeld, Satoshi Nishimoto, M. W. Haverkort, and Jeroen van den Brink,\\ //Microscopic origin of spin-orbital separation in Sr₂CuO₃//,\\ Phys. Rev. B 88 195138 (2013), arXiv, {{ :publications:physrevb_088_195138.pdf | }} * [57] E. Benckiser, L. Fels, G. Ghiringhelli, M. Moretti Sala, T. Schmitt, J. Schlappa, V. N. Strocov, N. Mufti, G. R. Blake, A. A. Nugroho, T. T. M. Palstra, M. W. Haverkort, K. Wohlfeld, and M. Gruninger,\\ //Orbital superexchange and crystal field simultaneously at play in YVO₃: Resonant inelastic x-ray scattering at the V L edge and the O K edge//,\\ Phys. Rev. B 88 205115 (2013), arXiv, {{ :publications:physrevb_088_205115.pdf | }}. * [56] A. Frano, E. Schierle, M. W. Haverkort, Y. Lu, M. Wu, S. Blanco-Canosa, U. Nwankwo, A. V. Boris, P. Wochner, G. Cristiani, H. U. Habermeier, G. Logvenov, V. Hinkov, E. Benckiser, E. Weschke, and B. Keimer,\\ //Orbital Control of Noncollinear Magnetic Order in Nickel Oxide Heterostructures//,\\ Phys. Rev. Lett. 111, 106804 (2013), arXiv, {{ :publications:physrevlett_111_106804.pdf | }}. * [55] M. Wu, E. Benckiser, M. W. Haverkort, A. Frano, Y. Lu, U. Nwankwo, S. Bruck, P. Audehm, E. Goering, S. Macke, V. Hinkov, P. Wochner, G. Christiani, S. Heinze, G. Logvenov, H.-U. Habermeier, and B. Keimer,\\ //Strain and composition dependence of orbital polarization in nickel oxide superlattices//,\\ Phys. Rev. B 88 125124 (2013), arXiv, {{ :publications:physrevb_088_125124.pdf | }}. * [54] Z.-H. Zhu, C. N. Veenstra, G. Levy, A. Ubaldini, P. Syers, N. P. Butch, J. Paglione, M. W. Haverkort, I. S. Elfimov, and A. Damascelli,\\ //Layer-by-layer entangled spin-orbital texture of the topological surface state in Bi₂Se₃//,\\ Phys. Rev. Lett. 110, 216401 (2013), arXiv, {{ :publications:physrevlett_110_216401.pdf | }}. * [53] F. Strigari, T. Willers, Y. Muro, K. Yutani, T. Takabatake, Z. Hu, S. Agrestini, C.-Y. Kuo, Y.-Y. Chin, H.-J. Lin, T. W. Pi, C. T. Chen, E. Weschke, E. Schierle, A. Tanaka, M. W. Haverkort, L. H. Tjeng, and A. Severing,\\ //Crystal field ground state of the orthorhombic Kondo semiconductors CeOs₂Al₁₀ and CeFe₂Al₁₀//,\\ Phys. Rev. B 87 125119 (2013), arXiv, {{ :publications:physrevb_087_125119.pdf | }}. ==== 2012 ==== * [52] M. W. Haverkort, M. Zwierzycki, and O. K. Andersen,\\ //Multiplet ligand-field theory using Wannier orbitals//,\\ Phys. Rev. B 85 165113 (2012), arXiv, {{ :publications:physrevb_085_165113.pdf | }}. * [51] T. Willers, F. Strigari, N. Hiraoka, Y. Q. Cai, M. W. Haverkort, K.-D. Tsuei, Y. F. Liao, S. Seiro, C. Geibel, F. Steglich, L. H. Tjeng, and A. Severing,\\ //Determining the In-Plane Orientation of the Ground-State Orbital of CeCu₂Si₂//,\\ Phys. Rev. Lett. 109, 046401 (2012), arXiv, {{ :publications:physrevlett_109_046401.pdf | }}. * [50] F. Strigari, T. Willers, Y. Muro, K. Yutani, T. Takabatake, Z. Hu, Y.-Y. Chin, S. Agrestini, H.-J. Lin, C. T. Chen, A. Tanaka, M. W. Haverkort, L. H. Tjeng, and A. Severing,\\ //Crystal-field ground state of the orthorhombic Kondo insulator CeRu₂Al₁₀//,\\ Phys. Rev. B 86 081105 (2012), arXiv, {{ :publications:physrevb_086_081105.pdf | }}. * [49] M. A. Hossain, B. Bohnenbuck, Y. D. Chuang, M. W. Haverkort, I. S. Elfimov, A. Tanaka, A. G. Cruz Gonzalez, Z. Hu, H.-J. Lin, C. T. Chen, R. Mathieu, Y. Tokura, Y. Yoshida, L. H. Tjeng, Z. Hussain, B. Keimer, G. A. Sawatzky, and A. Damascelli,\\ //Mott versus Slater-type metal-insulator transition in Mn-substituted Sr₃Ru₂O₇//,\\ Phys. Rev. B 86 041102 (2012), arXiv, {{ :publications:physrevb_086_041102.pdf | }}. * [48] S. Glawion, M. W. Haverkort, G. Berner, M. Hoinkis, G. Gavrilla, R. Kraus, M. Knopfer, M. Sing, and R. Claessen,\\ //Unoccupied electronic structure of TiOCl studied using x-ray absorption near-edge spectroscopy//,\\ J. Phys.: Condens. Matter 24, 255602 (2012), arXiv, {{ :publications:jphyscondensmatter_24_255602.pdf | }}. * [47] P. Hansmann, M. W. Haverkort, A. Toschi, G. Sangiovanni, F. Rodolakis, J. P. Rueff, M. Marsi, and K. Held,\\ //Atomic and itinerant effects at the transition-metal x-ray absorption K pre-edge exemplified in the case of V₂O₃//,\\ Phys. Rev. B 85 115136 (2012), arXiv, {{ :publications:physrevb_085_115136.pdf | }}. * [46] J. Schlappa, K. Wohlfeld, K. J. Hou, M. Mourigal, M. W. Haverkort, V. N. Stocov, L. Hozoi, C. Monney, S. Nishimoto, S. Singh, A. Revcolevschi, J.-S. Caux, L. Patthey, H. M. Ronnow, J. van den Brink, and T. Schmitt,\\ //Spin-Orbit Separation in the quasi 1D Mott-insulator Sr₂CuO₃//,\\ Nature 485 82 (2012). ==== 2011 ==== * [45] M. Le Tacon, G. Ghiringhelli, J. Chaloupka, M. Moretti Sala, V. Hinkov, M. W. Haverkort, M. Minola, M. Bakr, K. J. Zhou, S. Blanco-Canosa, C. Monney, Y. T. Song, G. L. Sun, C. T. Lin, G. M. De Luca, M. Salluzzo, G. Khaliullin, T. Schmitt, L. Braicovich, and B. Keimer,\\ //Intense paramagnon excitations in a large family of high-temperature superconductors//,\\ Nature Physics (2011), arXiv. * [44] E. Benckiser, M. W. Haverkort, S. Brück, E. Goering, S. Macke, A. Frañó, X. Yang, O. K. Andersen, G. Cristiani, H.-U. Habermeier, A. V. Boris, I. Zegkinoglou, P. Wochner, H.-J. Kim, V. Hinkov, and B. Keimer,\\ //Orbital reflectometry of oxide heterostructures//,\\ Nature Materials 10, 189 (2011), arXiv. * [43] S. Glawion, J. Heidler, M. W. Haverkort, L. C. Duda, T. Schmitt, V. N. Strocov, C. Monney, K. J. Zhou, A. Ruff, M. Sing, and R. Claessen,\\ //Two-Spinon and Orbital Excitations of the Spin-Peierls System TiOCl//,\\ Phys. Rev. Lett. 107, 107402 (2011), arXiv, {{ :publications:physrevlett_107_107402.pdf | }}. * [42] N. Hiraoka, M. Suzuki, K. D. Tsuei, H. Ishii, Y. Q. Cai, M. W. Haverkort, C. C. Lee and W. Ku,\\ //dd excitations in three-dimensional q-space: A nonresonant inelastic X-ray scattering study on NiO//,\\ Europhys. Lett. 96, 37007 (2011), arXiv, {{ :publications:epl_096_37007.pdf | }}. * [41] Subhra Sen Gupta, J. A. Bradley, M. W. Haverkort, G. T. Seidler, A. Tanaka, G. A. Sawatzky,\\ //Coexistence of bound and virtual bound states in shallow-core to valence x-ray spectroscopies//,\\ Phys. Rev. B 84 075134 (2011), arXiv, {{ :publications:physrevb_084_075134.pdf | }}. * [40] F. Rodolakis, J.-P. Rueff, M. Sikora, I. Alliot, J.-P. Itie, F. Baudelet, S. Ravy, P. Wzietek, P. Hansmann, A. Toschi, M. W. Haverkort, G. Sangiovanni, K. Held, P. Metcalf, and M. Marsi,\\ //Evolution of the electronic structure of a Mott system across its phase diagram: X-ray absorption spectroscopy study of (V_1-xCr_x)₂O₃//,\\ Phys. Rev. B 84, 245113 (2011), arXiv, {{ :publications:physrevb_084_245113.pdf | }}. * [39] N. Hollmann, M. W. Haverkort, M. Benomar, M. Cwik, M. Braden, and T. Lorenz,\\ //Evidence for a temperature-induced spin-state transition of Co3+ in La_2-xSr_xCoO₄//,\\ Phys. Rev. B 83, 174435 (2011), arXiv, {{ :publications:physrevb_083_174435.pdf | }}. ==== 2010 ==== * [38] M. W. Haverkort,\\ //Theory of Resonant Inelastic X-Ray Scattering by Collective Magnetic Excitations//,\\ Phys. Rev. Lett. 105, 167404 (2010), arXiv, {{ :publications:physrevlett_105_167404.pdf | }}. * [37] F. Rodolakis, P. Hansmann, J.-P. Rueff, A. Toschi, M. W. Haverkort, G. Sangiovanni, A. Tanaka, T. Saha-Dasgupta, O. K. Andersen, K. Held, M. Sikora, I. Alliot, J.-P. Itié, F. Baudelet, P. Wzietek, P. Metcalf, and M. Marsi,\\ //Inequivalent Routes across the Mott Transition in V₂O₃ Explored by X-Ray Absorption//,\\ Phys. Rev. Lett. 104, 047401 (2010), arXiv, {{ :publications:physrevlett_104_047401.pdf | }}. * [36] O. Gunnarsson, G. Sangiovanni, A. Valli, and M. W. Haverkort,\\ //Fourier transformation and response functions//,\\ Phys. Rev. B 82, 233104 (2010), arXiv, {{ :publications:physrevb_082_233104.pdf | }}. * [35] G. M. De Luca, G. Ghiringhelli, M. Moretti Sala, S. Di Matteo, M. W. Haverkort, H. Berger, V. Bisogni, J. C. Cezar, N. B. Brookes, and M. Salluzzo,\\ //Weak magnetism in insulating and superconducting cuprates//,\\ Phys. Rev. B 82, 214504 (2010), arXiv, {{ :publications:physrevb_082_214504.pdf | }}. * [34] O. Gunnarsson, M. W. Haverkort, and G. Sangiovanni,\\ //Analytical continuation of imaginary axis data for optical conductivity//,\\ Phys. Rev. B 82, 165125 (2010), arXiv, {{ :publications:physrevb_082_ 165125.pdf | }}. * [33] O. Gunnarsson, M. W. Haverkort, and G. Sangiovanni,\\ //Analytical continuation of imaginary axis data using maximum entropy//,\\ Phys. Rev. B 81, 155107 (2010), arXiv, {{ :publications:physrevb_081_155107.pdf | }}. * [32] M. W. Haverkort, N. Hollmann, I. P. Krug, and A. Tanaka,\\ //Symmetry analysis of magneto-optical effects: The case of x-ray diffraction and x-ray absorption at the transition metal L_2,3 edge//,\\ Phys. Rev. B 82, 094403 (2010), arXiv, {{ :publications:physrevb_082_094403.pdf | }}. * [31] T. Haupricht, R. Sutarto, M. W. Haverkort, H. Ott, A. Tanaka, H. H. Hsieh, H.-J. Lin, C. T. Chen, Z. Hu, and L. H. Tjeng,\\ //Local electronic structure of Fe²⁺ impurities in MgO thin films: Temperature-dependent soft x-ray absorption spectroscopy study//,\\ Phys. Rev. B 82, 035120 (2010), arXiv, {{ :publications:physrevb_082_035120.pdf | }}. * [30] J. A. Bradley, S. Sen Gupta, G. T. Seidler, K. T. Moore, M. W. Haverkort, G. A. Sawatzky, S. D. Conradson, D. L. Clark, S. A. Kozimor, and K. S. Boland,\\ //Probing electronic correlations in actinide materials using multipolar transitions//,\\ Phys. Rev. B 81, 193104 (2010), arXiv, {{ :publications:physrevb_081_193104.pdf | }}. ==== 2009 ==== * [29] S. Altieri, M. Finazzi, H. H. Hsieh, M. W. Haverkort, H.-J. Lin, C. T. Chen, S. Frabboni, G. C. Gazzadi, A. Rota, S. Valeri, and L. H. Tjeng,\\ //Image charge screening: A new approach to enhance magnetic ordering temperatures in ultrathin correlated oxide films//,\\ Phys. Rev. B 79, 174431 (2009), arXiv, {{ :publications:physrevb_079_174431.pdf | }}. * [28] R. A. Gordon, M. W. Haverkort, Subhra Sen Gupta and G. A. Sawatzky,\\ //Orientation-dependent x-ray Raman scattering from cubic crystals: Natural linear dichroism in MnO and CeO₂//,\\ J. Phys.: Conf. Ser. 190 012047 (2009), {{ :publications:jpconf9_190_012047.pdf | }}. * [27] F. Rodolakis, P. Hansmann, J.-P. Rueff, A. Toschi, M. W. Haverkort, G. Sangiovanni, K. Held, M. Sikora, A. Congeduti, J-P. Itié, F. Baudelet, P. Metcalf and M. Marsi,\\ //Electronic correlations in V₂O₃ studied with K-edge X-ray absorption spectroscopy//,\\ J. Phys.: Conf. Ser. 190 012092 (2009), {{ :publications:jpconf9_190_012092.pdf | }}. ==== 2008 ==== * [26] M. W. Haverkort, I. S. Elfimov, L. H. Tjeng, G. A. Sawatzky, and A. Damascelli,\\ //Strong Spin-Orbit Coupling Effects on the Fermi Surface of Sr₂RuO₄ and Sr₂RhO₄//,\\ Phys. Rev. Lett. 101, 026406 (2008), arXiv, {{ :publications:physrevlett_101_026406.pdf | }}. * [25] M. A. Hossain, Z. Hu, M. W. Haverkort, T. Burnus, C. F. Chang, S. Klein, J. D. Denlinger, H.-J. Lin, C. T. Chen, R. Mathieu, Y. Kaneko, Y. Tokura, S. Satow, Y. Yoshida, H. Takagi, A. Tanaka, I. S. Efimov, G. A. Sawatzky, L. H. Tjeng, and A. Damascelli,\\ //Crystal-Field Level Inversion in Lightly Mn-Doped Sr₃Ru₂O₇//,\\ Phys. Rev. Lett. 101, 016404 (2008), arXiv, {{ :publications:physrevlett_101_016404.pdf | }}. * [24] P. Hansmann, A. Severing, Z. Hu, M. W. Haverkort, C. F. Chang, S. Klein, A. Tanaka, H. H. Hsieh, H.-J. Lin, C. T. Chen, B. Fåk, P. Lejay, and L. H. Tjeng,\\ //Determining the Crystal-Field Ground State in Rare Earth Heavy Fermion Materials Using Soft-X-Ray Absorption Spectroscopy//,\\ Phys. Rev. Lett. 100, 066405 (2008), arXiv, {{ :publications:physrevlett_100_066405.pdf | }}. * [23] J. Schlappa, C. Schüßler-Langeheine, C. F. Chang, H. Ott, A. Tanaka, Z. Hu, M. W. Haverkort, E. Schierle, E. Weschke, G. Kaindl, and L. H. Tjeng,\\ //Direct Observation of t_2g Orbital Ordering in Magnetite//,\\ Phys. Rev. Lett. 100, 026406 (2008), arXiv, {{ :publications:physrevlett_100_026406.pdf | }}. * [22] I. P. Krug, F. U. Hillebrecht, H. Gomonaj, M. W. Haverkort, A. Tanaka, L. H. Tjeng and C. M. Schneider,\\ //Magnetic coupling in highly ordered NiO/Fe₃O₄ (110): Ultrasharp magnetic interfaces v.s. long-range magnetoelastic interactions//,\\ Europhys. Lett. 81 17005 (2008), arXiv, {{ :publications:epl_081_26004.pdf | }}. * [21] R. A. Gordon, G. T. Seidler, T. T. Fister, M. W. Haverkort, G. A. Sawatzky, A. Tanaka and T. K. Sham,\\ //High multipole transitions in NIXS: Valence and hybridization in 4f systems//,\\ Europhys. Lett. 81 26004 (2008), arXiv, {{ :publications:epl_081_26004.pdf | }}. * [20] N. Hollmann, M. W. Haverkort, M. Cwik, M. Benomar, M. Reuther, A. Tanaka and T. Lorenz,\\ //Anisotropic susceptibility of La_2-xSr_xCoO₄ related to the spin states of cobalt//,\\ New J. Phys. 10 023018 (2008), arXiv, {{ :publications:njp8_2_023018.pdf | }}. * [19] Michel van Veenendaal and M. W. Haverkort,\\ //Effective operator for d-d transitions in nonresonant inelastic x-ray scattering//,\\ Phys. Rev. B 77, 224107 (2008), arXiv, {{ :publications:physrevb_077_224107.pdf | }}. * [18] T. Burnus, Z. Hu, H. H. Hsieh, V. L. J. Joly, P. A. Joy, M. W. Haverkort, Hua Wu, A. Tanaka, H.-J. Lin, C. T. Chen, and L. H. Tjeng,\\ //Local electronic structure and magnetic properties of LaMn0.5Co0.5O3 studied by x-ray absorption and magnetic circular dichroism spectroscopy//,\\ Phys. Rev. B 77, 125124 (2008), arXiv, {{ :publications:physrevb_077_125124.pdf | }}. * [17] A. Gössling, M. W. Haverkort, M. Benomar, Hua Wu, D. Senff, T. Möller, M. Braden, J. A. Mydosh, and M. Grüninger,\\ //Mott-Hubbard versus charge-transfer behavior in LaSrMnO⁴ studied via optical conductivity//,\\ Phys. Rev. B 77, 035109 (2008), arXiv, {{ :publications:physrevb_077_035109.pdf | }}. * [16] A. Gössling, R. Schmitz, H. Roth, M. W. Haverkort, T. Lorenz, J. A. Mydosh, E. Müller-Hartmann, and M. Grüninger,\\ //Mott-Hubbard exciton in the optical conductivity of YTiO3 and SmTiO3//,\\ Phys. Rev. B 78, 075122 (2008), arXiv, {{ :publications:physrevb_078_075122.pdf | }}. * [15] I. P. Krug, F. U. Hillebrecht, M. W. Haverkort, A. Tanaka, L. H. Tjeng, H. Gomonay, A. Fraile-Rodríguez, F. Nolting, S. Cramm, and C. M. Schneider,\\ //Impact of interface orientation on magnetic coupling in highly ordered systems: A case study of the low-indexed Fe₃O₄/NiO interfaces//,\\ Phys. Rev. B 78, 064427 (2008), {{ :publications:physrevb_078_064427.pdf | }}. ==== 2007 ==== * [14] M. W. Haverkort, A. Tanaka, L. H. Tjeng, and G. A. Sawatzky,\\ //Nonresonant Inelastic X-Ray Scattering Involving Excitonic Excitations: The Examples of NiO and CoO//,\\ Phys. Rev. Lett. 99, 257401 (2007), arXiv, {{ :publications:physrevlett_099_257401.pdf | }}. ==== 2006 ==== * [13] A. Podlesnyak, S. Streule, J. Mesot, M. Medarde, E. Pomjakushina, K. Conder, A. Tanaka, M. W. Haverkort, and D. I. Khomskii,\\ //Spin-State Transition in LaCoO₃: Direct Neutron Spectroscopic Evidence of Excited Magnetic States//,\\ Phys. Rev. Lett. 97, 247208 (2006), arXiv, {{ :publications:physrevlett_097_247208.pdf | }}. * [12] M. W. Haverkort, Z. Hu, J. C. Cezar, T. Burnus, H. Hartmann, M. Reuther, C. Zobel, T. Lorenz, A. Tanaka, N. B. Brookes, H. H. Hsieh, H.-J. Lin, C. T. Chen, and L. H. Tjeng,\\ //Spin State Transition in LaCoO₃ Studied Using Soft X-ray Absorption Spectroscopy and Magnetic Circular Dichroism//,\\ Phys. Rev. Lett. 97, 176405 (2006), arXiv, {{ :publications:physrevlett_097_176405.pdf | }}. * [11] T. C. Koethe, Z. Hu, M. W. Haverkort, C. Schüßler-Langeheine, F. Venturini, N. B. Brookes, O. Tjernberg, W. Reichelt, H. H. Hsieh, H.-J. Lin, C. T. Chen, and L. H. Tjeng,\\ //Transfer of Spectral Weight and Symmetry across the Metal-Insulator Transition in VO2//,\\ Phys. Rev. Lett. 97, 116402 (2006), {{ :publications:physrevlett_097_116402.pdf | }}. * [10] T. Burnus, Z. Hu, M. W. Haverkort, J. C. Cezar, D. Flahaut, V. Hardy, A. Maignan, N. B. Brookes, A. Tanaka, H.-H. Hsieh, H.-J. Lin, C.-T. Chen, and L. H. Tjeng,\\ //Valence, spin, and orbital state of Co ions in one-dimensional Ca₃Co₂O₆: An x-ray absorption and magnetic circular dichroism study//,\\ Phys. Rev. B 74, 245111 (2006), arXiv, {{ :publications:physrevb_074_245111.pdf | }}. ==== 2005 ==== * [9] M. W. Haverkort, Z. Hu, A. Tanaka, W. Reichelt, S. V. Streltsov, M. A. Korotin, V. I. Anisimov, H. H. Hsieh, H.-J. Lin, C. T. Chen, D. I. Khomskii, and L. H. Tjeng,\\ //Orbital-assisted metal-insulator transition in VO₂//,\\ Phys. Rev. Lett. 95, 196404 (2005), arXiv, {{ :publications:physrevlett_095_196404.pdf | }}. * [8] Hua Wu, M. W. Haverkort, Z. Hu, D. I. Khomskii, and L. H. Tjeng,\\ //Nature of magnetism in Ca₃Co₂O₆//,\\ Phys. Rev. Lett. 95, 186401 (2005), arXiv, {{ :publications:physrevlett_095_186401.pdf | }}. * [7] S. I. Csiszar, M. W. Haverkort, Z. Hu, A. Tanaka, H. H. Hsieh, H.-J. Lin, C. T. Chen, T. Hibma, and L. H. Tjeng,\\ //Controlling Orbital Moment and Spin Orientation in CoO Layers by Strain//,\\ Phys. Rev. Lett. 95, 187205 (2005), arXiv, {{ :publications:physrevlett_095_187205.pdf | }}. * [6] R. Rückamp, J. Baier, M. Kriener, M. W. Haverkort, T. Lorenz, G. S. Uhrig, L. Jongen, A. Möller, G. Meyer, and M. Grüninger,\\ //Zero-Field Incommensurate Spin-Peierls Phase with Interchain Frustration in TiOCl//,\\ Phys. Rev. Lett. 95, 097203 (2005), arXiv, {{ :publications:physrevlett_095_097203.pdf | }}. * [5] M. W. Haverkort, Z. Hu, A. Tanaka, G. Ghiringhelli, H. Roth, M. Cwik, T. Lorenz, C. Schüßler-Langeheine, S. V. Streltsov, A. S. Mylnikova, V. I. Anisimov, C. de Nadai, N. B. Brookes, H. H. Hsieh, H.-J. Lin, C. T. Chen, T. Mizokawa, Y. Taguchi, Y. Tokura, D. I. Khomskii, and L. H. Tjeng,\\ //Determination of the Orbital Moment and Crystal-Field Splitting in LaTiO₃//,\\ Phys. Rev. Lett. 94, 056401 (2005), arXiv, {{ :publications:physrevlett_094_056401.pdf | }}. * [4] R. Rückamp, E. Benckiser, M. W. Haverkort, H. Roth, T. Lorenz, A. Freimuth, L. Jongen, A. Möller, G. Meyer, P. Reutler, B. Büchner, A. Revcolevschi, S.-W. Cheong, C. Sekar, G. Krabbes, and M. Grüninger,\\ //Optical study of orbital excitations in transition-metal oxides//,\\ New Journal of Physics 7, 144 (2005), {{ :publications:njp5_1_144.pdf | }}. ==== 2004 ==== * [3] Z. Hu, Hua Wu, M. W. Haverkort, H. H. Hsieh, H.-J. Lin, T. Lorenz, J. Baier, A. Reichl, I. Bonn, C. Felser, A. Tanaka, C. T. Chen, and L. H. Tjeng,\\ //Different Look at the Spin State of Co³⁺ Ions in a CoO₅ Pyramidal Coordination//,\\ Phys. Rev. Lett. 92, 207402 (2004), arXiv, {{ :publications:physrevlett_092_207402.pdf | }}. * [2] A. D. Rata, A. R. Chezan, T. Hibma, M. W. Haverkort, L. H. Tjeng, H. H. Hsieh, H.-J. Lin, and C. T. Chen,\\ // Growth and properties of strained VOx thin films with controlled stoichiometry//,\\ Phys. Rev. B 69, 075404 (2004), arXiv, {{ :publications:physrevb_069_075404.pdf | }}. * [1] M. W. Haverkort, S. I. Csiszar, Z. Hu, S. Altieri, A. Tanaka, H. H. Hsieh, H.-J. Lin, C. T. Chen, T. Hibma, and L. H. Tjeng,\\ // Magnetic versus crystal field linear dichroism in NiO thin films//,\\ Phys. Rev. B 69, 020408(R) (2004), arXiv, {{ :publications:physrevb_069_020408.pdf | }}. ===== Invited contributions ===== * M. W. Haverkort and O. K. Andersen,\\ //Multiplet ligand-field theory using Wannier orbitals//,\\ [[http://www.fkf.mpg.de/565441/08_jb2012.pdf|Internal Annual Report of the MPI-FKF Stuttgart 2011, (2012)]], {{ :publications:mpi_annual_report_2011b.pdf | }}. * M. Le Tacon, J. Chaloupka, M. W. Haverkort, V. Hinkov, S. Blanco-Canosa, M. Bakr, G. L. Sun, Y. T. Song, C. T. Lin, G. Khaliullin, and B. Keimer,\\ //Intense paramagnon excitations in a large family of high-temperature superconductors//,\\ [[http://www.fkf.mpg.de/565441/08_jb2012.pdf|Internal Annual Report of the MPI-FKF Stuttgart 2011, (2012)]], {{ :publications:mpi_annual_report_2011a.pdf | }}. * O. Gunnarsson, M. W. Haverkort and G. Sangiovanni,\\ //Analytical continuation of imaginary axis data using maximum entropy//,\\ [[http://www.fkf.mpg.de/356051/09_jb2011.pdf|Internal Annual Report of the MPI-FKF Stuttgart 2010, (2011)]], {{ :publications:mpi_annual_report_2010b.pdf | }}. * E. Benckiser, M. W. Haverkort, A. Frañó, O. K. Andersen, G. Cristiani, H.-U. Habermeier, A. V. Boris, I. Zegkinoglou, V. Hinkov and B. Keimer,\\ //Orbital reflectometry of oxide heterostructures//,\\ [[http://www.fkf.mpg.de/356051/09_jb2011.pdf|Internal Annual Report of the MPI-FKF Stuttgart 2010, (2011)]], {{ :publications:mpi_annual_report_2010a.pdf | }}. * M. W. Haverkort,\\ //Theory of resonant inelastic X-ray scattering by collective magnetic excitations//,\\[[http://www.fkf.mpg.de/173060/10_jb2010.pdf|Internal Annual Report of the MPI-FKF Stuttgart 2009, (2010)]], {{ :publications:mpi_annual_report_2009.pdf | }}. * G.-Q. Liu, V. N. Antonov, M. W. Haverkort, O. Jepsen, and O. K. Andersen,\\ //Coulumb-enhanced spin-orbit splitting: The missing piece in the Sr₂RhO₄ puzzle//, \\ [[http://www.fkf.mpg.de/173044/12_jb2008.pdf|Internal Annual Report of the MPI-FKF Stuttgart 2008, (2009)]], {{ :publications:mpi_annual_report_2008.pdf | }}. * J. Schlappa, C. Schüßler-Langeheine, C. F. Chang, H. Ott, A. Tanaka, Z. Hu, M. W. Haverkort, E. Schierle, E. Weschke, G. Kaindl and L. H. Tjeng,\\ //Cool magnetite: Frozen electrons below the Verwey temperature//,\\ [[https://www.helmholtz-berlin.de/media/media/oea/mediathek/druckschriften/infos/bessy/highlights2007.pdf|BESSY Highlights 2007, (2008)]], {{ :publications:bessy_highlights_2007.pdf | }}. * M. W. Haverkort, Z. Hu, J. C. Cezar, T. Burnus, H. Hartmann, M. Reuther, C. Zobel, T. Lorenz, A. Tanaka, N. B. Brookes, H. H. Hsieh, H.-J. Lin, C. T. Chen and L. H. Tjeng,\\ //Spin state transition in LaCoO₃ studied using soft X-ray absorption spectroscopy and magneic circular dichrosim//,\\ [[http://www.esrf.eu/UsersAndScience/Publications/Highlights/2006/XAMS/xams09|ESRF Highlights 2006 - X-Ray Absorption and Magnetic Scattering, (2007)]], {{ :publications:esrf_highlights_2006.pdf | }}. * M. W. Haverkort, Z. Hu, A. Tanaka, H. H. Hsieh, H.-J. Lin, C. T. Chen and L. H. Tjeng,\\ //The Spin State Transition In LaCoO₃; Revising A Revision//, \\ [[http://www.nsrrc.org.tw/english/publicYears.aspx?ViewID=20071026152634092|NSRRC Activety Report - Research Highlights - Material Physics, (2007)]], {{ :publications:nsrrc_activity_report_2006_2007_06.pdf | }}. * M. W. Haverkort, Z. Hu, S. I. Csiszar, T. Hibma, A. Tanaka, H. H. Hsieh, H.-J. Lin, C. T. Chen and L. H. Tjeng,\\ //Controlling Orbital Moment and Spin Orientation in CoO Layers by Strain//, \\ [[http://www.nsrrc.org.tw/english/publicYears.aspx?ViewID=20061020162329283|NSRRC Activety Report - Research Highlights - Material Physics, (2006)]], {{ :publications:nsrrc_activity_report_2005_2006_10.pdf | }}. * M. W. Haverkort, Z. Hu, A. Tanaka, H. H. Hsieh, H.-J. Lin, C. T. Chen and L. H. Tjeng,\\ //Orbital-Assisted Metal-Insulator Transition in VO₂//, \\ [[http://www.nsrrc.org.tw/english/publicYears.aspx?ViewID=20061020162329283|NSRRC Activety Report - Research Highlights - Material Physics, (2006)]], {{ :publications:nsrrc_activity_report_2005_2006_09.pdf | }}. * M. W. Haverkort, Z. Hu, H. H. Hsieh, H.-J. Lin, C. T. Chen and L. H. Tjeng,\\ //Determination of the Crystal Field Splitting and the Orbital Moment in LaTiO₃//, \\ NSRRC Activety Report - [[http://www.nsrrc.org.tw/english/publicYears.aspx?ViewID=20060104172849601|Research Highlights - Material Physics, (2005)]], {{ :publications:nsrrc_activity_report_2004_2005_06.pdf | }}. ===== PhD. Thesis ===== * M. W. Haverkort\\ //Spin and orbital degrees of freedom in transition metal oxides and oxide thin films studied by soft x-ray absorption spectroscopy,// \\ [[http://kups.ub.uni-koeln.de/1455/|PhD. Thesis, University of Cologne, June 2005]], [[https://arxiv.org/abs/cond-mat/0505214|arXiv]], {{ :publications:2005_haverkort.pdf | }}. {{ :wiki:head.gif?nolink |}}