Hinkov group

Neutron and resonant x-ray spectroscopy in correlated materials

In our group we investigate complex, functional materials such as transition metal oxides, which are used in the emerging field of correlated nanoelectronics. Unlike with conventional semiconductors, exotic superconducting, orbital and magnetic states can be realized at the interfaces in layered structures comprising such materials. Examples include the LaAlO₃ - SrTiO₃ interface, at which both superconductivity and magnetism are observed, and at which electronically active structures can be “written” and “erased”, as well as LaCoO₃, which undergoes various interface modifications and magnetizations upon strained growth on substrates with different lattice constants.

We investigate such structures both experimentally using neutron and resonant x-ray scattering, and with computer simulations, and the exchange of ideas with theoreticians is an integral part of our work. We closely collaborate with groups in Würzburg and with colleagues at the University of British Columbia in Vancouver, the Canadian Light Source, the BESSY synchrotron in Berlin and the MPI-Stuttgart.

Master thesis topics are available. We offer opportunities for research visits in the institutions mentioned above and are committed to supervision.

Selected publications

Molecular beam epitaxy of antiferromagnetic (MnBi₂Te₄)(Bi₂Te₃) thin films on BaF₂ (111)
P. Kagerer, C. I. Fornari, S. Buchberger, S. L. Morelhão, R. C. Vidal, 1,2 A. Tcakaev, V. Zabolotnyy, E. Weschke, V. Hinkov, M. Kamp, B. Büchner, A. Isaeva, H. Bentmann, and F. Reinert
J. Appl. Phys. 128, 135303 (2020).
Published: 5 October 2020

Incorporation of Europium in Bi₂Te₃ Topological Insulator Epitaxial Films
Incorporation of Europium in Bi2 Te3 Topological Insulator Epitaxial Films Celso I. Fornari,* Hendrik Bentmann, Sé rgio L. Morelhão, Thiago R. F. Peixoto, Paulo H. O. Rappl, Abdul-Vakhab Tcakaev, Volodymyr Zabolotnyy, Martin Kamp, Tien-Lin Lee, Chul-Hee Min, Philipp Kagerer, Raphael C. Vidal, Anna Isaeva, Michael Ruck, Vladimir Hinkov, Friedrich Reinert, and Eduardo Abramof
J. Phys. Chem. C 2020, 124, 16048−16057.
Published 25 June 2020

Incipient antiferromagnetism in the Eu-doped topological insulator ${Bi}_{2} Te 3$
A. Tcakaev, V. B. Zabolotnyy, C. I. Fornari, P. Rüßmann, T. R. F. Peixoto, F. Stier, M. Dettbarn, P. Kagerer, E. Weschke, E. Schierle, P. Bencok, P. H. O. Rappl, E. Abramof, H. Bentmann, E. Goering, F. Reinert, and V. Hinkov
Phys. Rev. B 102, 184401.
Published 2 November 2020

Comparing magnetic ground-state properties of the V- and Cr-doped topological insulator (Bi,Sb)₂Te₃
A. Tcakaev, V. B. Zabolotnyy, R. J. Green, T. R. F. Peixoto, F. Stier, M. Dettbarn, S. Schreyeck, M. Winnerlein, R. Crespo Vidal, S. Schatz, H. B. Vasili, M. Valvidares, K. Brunner, C. Gould, H. Bentmann, F. Reinert, L. W. Molenkamp, and V. Hinkov
Phys. Rev. B 101, 045127 (2020) (Editor's suggestion).
Published 27. January 2020

Chemical and valence reconstruction at the surface of SmB₆ revealed by means of resonant soft x-ray reflectometry
V. B. Zabolotnyy, K. Fürsich, R. J. Green, P. Lutz, K. Treiber, Chul-Hee Min, A. V. Dukhnenko, N. Y. Shitsevalova, V. B. Filipov, B. Y. Kang, B. K. Cho, R. Sutarto, Feizhou He, F. Reinert, D. Inosov, and V. Hinkov
Phys. Rev. B 97, 205416 (2018) (Editors' Suggestion). Published 14. May 2018

Theory-restricted resonant x-ray reflectometry of quantum materials
K. Fürsich, V. B. Zabolotnyy, E. Schierle, L. Dudy, O. Kirilmaz, M. Sing, R. Claessen, R. J. Green, M. W. Haverkort, and V. Hinkov
Phys. Rev. B 97, 165126 (2018). Published 16. April 2018

Valence-state reflectometry of complex oxide heterointerfaces
J. E. Hamann-Borrero, S. Macke, W. S. Choi, R. Sutarto, F. He, A. Radi, I. Elfimov, R. J. Green, M. W. Haverkort, V. B. Zabolotnyy, H. N. Lee, G. A. Sawatzky, and V. Hinkov
Nature Quantum Materials 1, 16013 (2016). Published 16. September 2016

63Cu-NMR study of oxygen disorder in ortho-II YBa₂Cu₃Oy
T. Wu, R. Zhou, M. Hirata, I. Vinograd, H. Mayaffre, R. Liang, W. N. Hardy, D. A. Bonn, T. Loew, J. Porras, D. Haug, C. T. Lin, V. Hinkov, B. Keimer, and M.-H. Julien
Phys. Rev. B 93, 134518 (2016). Published 28. April 2016.

Influence of the Fermi Surface Morphology on the Magnetic Field-Driven Vortex Lattice Structure Transitions in YBa₂Cu₃O₇−d: d = 0, 0.15
N. G. Leos, J. S. White, J. A. Lim, J. L. Gavilano, B. Delley, L. Lemberger, A. T. Holmes, M. Medarde, T. Loew, V. Hinkov, C. T. Lin, M. Laver, C. D. Dewhurst, and E. M. Forgan
Journal of the Physical Society of Japan 84, 044709 (2015). Published 13. March 2015.

Element specific monolayer depth profiling
S. Macke, A. Radi, J. E. Hamann-Borrero, Adriano 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
Advanced Materials 26, 6554 (2014). Published 9. October 2014.

Layer selective control of the lattice structure in oxide superlattices
A. Frañó, E. Benckiser, Y. Lu, M. Wu, M. Castro-Colin, M. Reehuis, A. V. Boris, E. Detemple, W. Sigle, P. van Aken, G. Cristiani, G. Logvenov, H. U. Habermeier, P. Wochner, B. Keimer, and V. Hinkov
Advanced Materials 26, 258 (2014). Published 15. January 2014.

Orbital control of non collinear magnetic order in nickel oxide heterostructures
A. Frañó, 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
Phys. Rev. Lett. 111, 106804 (2013). Published 5. September 2013.

Older publications

T. Wu, H. Mayaffre, S. Krämer, M. Horvatic, C. Berthier, C. T. Lin, D. Haug, T. Loew, V. Hinkov, B. Keimer, and M.-H. Julien
Phys. Rev. B 88, 014511 (2013). Published 12. July 2013.

D. S. Inosov, G. Friemel, J. T. Park, A. C. Walters, Y. Texier, Y. Laplace, J. Bobroff, V. Hinkov, D. L. Sun, Y. Liu, R. Khasanov, K. Sedlak, Ph. Bourges, Y. Sidis, A. Ivanov, C. T. Lin, T. Keller, and B. Keimer
Phys. Rev. B 87, 224425 (2013).

J.-H. Kim, I. Vrejoiu, Y. Khaydukov, T. Keller, J. Stahn, A. Rühm, D. K. Satapathy, V. Hinkov, B. Keimer
Phys. Rev. B 86, 180402 (2012).

V. B. Zabolotnyy, A. A. Kordyuk, D. V. Evtushinsky, V. N. Strocov, L. Patthey, T. Schmitt, D. Haug, C. T. Lin, V. Hinkov, B. Keimer, B. Büchner, S. V. Borisenko
Phys. Rev. B 85, 064507 (2012).

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, B. Keimer.
Nature Physics 7, 725 (2011).

D. S. Inosov, J. T. Park, A. Charnukha, Yuan Li, A. V. Boris, B. Keimer, V. Hinkov.
Phys. Rev. B 83, 214520 (2011)

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, B. Keimer.
Nature Materials 10, 189−193 (2011).

D. S. Inosov, J. S. White, D. V. Evtushinsky, I. V. Morozov, A. Cameron, U. Stockert, V. B. Zabolotnyy, T. K. Kim, A. A. Kordyuk, S. V. Borisenko, E. M. Forgan, R. Klingeler, J. T. Park, S. Wurmehl, A. N. Vasiliev, G. Behr, C. D. Dewhurst, V. Hinkov.
Phys. Rev. Lett. 104 (2010), 187001

All publications