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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,
    Phys. Rev. Lett. 117, 115501 (2016), arXiv, .
  • [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,
    Phys. Rev. B 93, 165121 (2016), arXiv, .
  • [71] C. Praetorius, M. Zinner, P. Hansmann, M. W. Haverkort, and K. Fauth,
    Exploring small energy scales with x-ray absorption and dichroism,
    Phys. Rev. B 93, 165107 (2016), arXiv, .

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,
    Nature scientific reports 5, 17937 (2015), arXiv, .
  • [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,
    Phys. Rev. B 91, 201108 (2015), arXiv, .
  • [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,
    Phys. Rev. B 91, 195127 (2015), arXiv, [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,
    Phys. Rev. B 91, 075127 (2015), arXiv, .
  • [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,
    J. Elec. Spec. Rel. Phen. 199, 56 (2015), arXiv, .

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,
    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,
    Euro. Phys. Lett. 108 57004 (2014), arXiv, .
  • [61] Y. Lu, M. Höppner, O. Gunnarsson, and M. W. Haverkort,
    Efficient real frequency solver for dynamical mean field theory,
    Phys. Rev. B 90 085102 (2014), arXiv, .
  • [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,
    Phys. Rev. Lett. 112 127002 (2014), arXiv, .
  • [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,
    Phys. Rev. Lett. 112 076802 (2014), arXiv, .

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,
  • [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, .
  • [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, .
  • [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, .
  • [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, .
  • [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, .

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, .
  • [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, .
  • [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, .
  • [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, .
  • [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, .
  • [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, .
  • [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, .
  • [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, .
  • [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, .
  • [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 (V1-xCrx)2O3,
    Phys. Rev. B 84, 245113 (2011), arXiv, .
  • [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 La2-xSrxCoO4,
    Phys. Rev. B 83, 174435 (2011), arXiv, .

2010

  • [38] M. W. Haverkort,
    Theory of Resonant Inelastic X-Ray Scattering by Collective Magnetic Excitations,
    Phys. Rev. Lett. 105, 167404 (2010), arXiv, .
  • [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, .
  • [36] O. Gunnarsson, G. Sangiovanni, A. Valli, and M. W. Haverkort,
    Fourier transformation and response functions,
    Phys. Rev. B 82, 233104 (2010), arXiv, .
  • [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, .
  • [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, .
  • [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, .
  • [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 L2,3 edge,
    Phys. Rev. B 82, 094403 (2010), arXiv, .
  • [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, .
  • [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, .

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, .
  • [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), .
  • [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), .

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, .
  • [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, .
  • [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, .
  • [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 t2g Orbital Ordering in Magnetite,
    Phys. Rev. Lett. 100, 026406 (2008), arXiv, .
  • [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, .
  • [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, .
  • [20] N. Hollmann, M. W. Haverkort, M. Cwik, M. Benomar, M. Reuther, A. Tanaka and T. Lorenz,
    Anisotropic susceptibility of La2-xSrxCoO4 related to the spin states of cobalt,
    New J. Phys. 10 023018 (2008), arXiv, .
  • [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, .
  • [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, .
  • [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, .
  • [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, .
  • [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), .

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, .

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, .
  • [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, .
  • [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), .
  • [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, .

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, .
  • [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, .
  • [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, .
  • [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, .
  • [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, .
  • [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), .

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, .
  • [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, .
  • [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, .

Invited contributions

  • 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,
    BESSY Highlights 2007, (2008), .
  • 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,
    ESRF Highlights 2006 - X-Ray Absorption and Magnetic Scattering, (2007), .

PhD. Thesis


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