Bernhard Keimer (* 24. August 1964 in Ratingen) is a German physicist and Director at the Max Planck Institute for Solid State Research. His research group uses spectroscopic methods to explore quantum many-body phenomena in correlated-electron materials and metal-oxide heterostructures.
Keimer obtained his physics education at the Technical University of Munich and at the Massachusetts Institute of Technology, where he received his Ph.D. degree in 1991. He spent a year as postdoctoral associate at Massachusetts Institute of Technology and seven years on the faculty of Princeton University, where he was appointed Full Professor in 1997. In 1998 he was appointed Scientific Member of the Max Planck Society and Director at the Max Planck Institute for Solid State Research. In 2000 he was named Honorary Professor at the University of Stuttgart. He serves as Speaker of the International Max Planck Research School for Condensed Matter Science and Co-Director of the Max Planck Society – University of British Columbia Center for Quantum Materials.
2011 Gottfried Wilhelm Leibniz Prize of the German Research Foundation
2010 Elected Fellow, Faculty of Engineering, University of Tokyo
2006 Elected Member, Heidelberg Academy of Sciences and Humanities
1996 Alfred P. Sloan Research Fellowship
1995 David & Lucile Packard Fellowship in Science and Engineering
V. Hinkov, D. Haug, B. Fauqué, P. Bourges, Y. Sidis, A. Ivanov, C. Bernhard, C.T. Lin, B. Keimer. 'Electronic Liquid Crystal State in the High-Temperature Superconductor YBa2Cu3O6.45. Science 319, 597 (2008).
T. Dahm, V. Hinkov, S.V. Borisenko, A.A. Kordyuk, V.B. Zabolotnyy, J. Fink, B. Büchner, D.J. Scalapino, W. Hanke, B. Keimer. Strength of the spin-fluctuation-mediated pairing interaction in a high-temperature superconductor. Nature Physics 5, 217 (2009).
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, Keimer. Intense paramagnon excitations in a large family of high-temperature superconductors. Nature Physics 7, 725 (2011).
S.P. Bayrakci, D. A. Tennant, Ph. Leininger, T. Keller, M.C.R. Gibson, S.D. Wilson, R.J. Birgeneau, B. Keimer. Lifetimes of Antiferromagnetic Magnons in Two and Three Dimensions: Experiment, Theory, and Numerics. Phys. Rev. Lett. 111, 017204 (2013).
M. Le Tacon, A. Bosak, S.M. Souliou, G. Dellea, T. Loew, R. Heid, K.-P. Bohnen, G. Ghiringhelli, M. Krisch, B. Keimer. Inelastic X-ray scattering in YBa2Cu3O6.6 reveals giant phonon anomalies and elastic central peak due to charge-density-wave formation. Nature Physics 10, 52 (2014).
J. Chakhalian, J.W. Freeland, H.-U. Habermeier, G. Cristiani, G. Khaliullin, M. van Veenendaal, B. Keimer. Orbital reconstruction and covalent bonding at an oxide interface. Science 318, 1114 (2007).
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. Orbital reflectometry of oxide heterostructures. Nature Materials 10, 189 (2011).
A.V. Boris, Y. Matiks, E. Benckiser, A. Frañó, P. Popovich, V. Hinkov, P. Wochner, M. Castro-Colin, E. Detemple, V.K. Malik, C. Bernhard, T. Prokscha, A. Suter, Z. Salman, E. Morenzoni, G. Cristiani, H.-U. Habermeier, B. Keimer. Dimensionality control of electronic phase transitions in nickel-oxide superlattices. Science 332, 937 (2011).
N. Driza, S. Blanco-Canosa, M. Bakr, S. Soltan, M. Khalid, L. Mustafa, K. Kawashima, G. Christiani, H.-U. Habermeier, G. Khaliullin, C. Ulrich, M. Le Tacon, B. Keimer. Long-range transfer of electron-phonon coupling in oxide superlattices. Nature Materials 11, 675 (2012).
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, B. Keimer. Orbital control of noncollinear magnetic order in nickelate heterostructures. Phys. Rev. Lett. 111, 106804 (2013).
