Keimer's department > Groups > Resonant x-ray diffraction

Magnetic, orbital and charge order in strongly correlated electron transition metal oxides investigated by resonant x-ray diffraction

The activities of our group concentrate on the investigation of the interplay between the magnetic, orbital and lattice degrees of freedom in transition metal oxides which are characterized by strong electron correlations. The main experimental tool used in our research is resonant x-ray diffraction, a synchrotron radiation facility-based technique that is highly sensitive to all kinds of periodic arrangements of either electronic or structural origin. Complementary information is provided by other x-ray related methods, such as non-resonant high-energy x-ray diffraction and x-ray absorption spectroscopy techniques, as well as by magnetic susceptibility measurements. Current fields of interest include the intriguing magnetic and orbital ordering in various ruthenium oxides (ruthenates) and iridium compounds (iridates), as well as the electronic properties of one-dimensional copper-oxide magnets. We are regular users of the world's largest synchrotron radiation facilities, with frequent experiments at the Advanced Photon Source (Argonne, USA), BESSY (Berlin, Germany), HASYLAB (Hamburg, Germany), Brookhaven National Laboratory (Upton, USA) and ESRF (Grenoble, France). We operate an in-house x-ray lab equipped with a Mo rotating anode for sample characterization and preparation of synchrotron experiments. We work closely together with the rest of the groups in the department and maintain a large number of international collaborations.

Recent Publications

Leininger et al.

Competing charge density waves and temperature-dependent nesting in 2H-TaSe2

Ph. Leininger, D. Chernyshov, A. Bosak, H. Berger, D. S. Inosov.
Phys. Rev. B 83 (2011), 233101
Leininger et al.

Ground State of the Quasi-1D BaVS3 Resolved by Resonant Magnetic X-Ray Scattering

Ph. Leininger, V. Ilakovac, Y. Joly, E. Schierle, E. Weschke, O. Bunau, H. Berger, J.-P. Pouget, P. Foury‑Leylekian.
Phys. Rev. Lett. 106 (2011), 167203
Hossain et al.

Magnetic Superstructure and Metal-Insulator Transition in Mn-Substituted Sr3Ru2O7

M. A. Hossain, B. Bohnenbuck, Y.-D. Chuang, A. G. Cruz Gonzalez, I. Zegkinoglou, M. W. Haverkort, J. Geck, D. G. Hawthorn, H.-H. Wu, C. Schüßler-Langeheine, R. Mathieu, Y. Tokura, S. Satow, H. Takagi, Y. Yoshida, J. D. Denlinger, I. S. Elfimov, Z. Hussain, B. Keimer, G. A. Sawatzky, A. Damascelli.
Preprint: arXiv:0906.0035
Leininger et al.

Electronic structure, magnetic, and dielectric properties of the edge-sharing copper oxide chain compound NaCu2O2

Ph. Leininger, M. Rahlenbeck, M. Raichle, B. Bohnenbuck, A. Maljuk, C. T. Lin, B. Keimer, E. Weschke, E. Schierle, S. Seki, Y. Tokura, J. W. Freeland.
Phys. Rev. B 81 (2010), 085111
Bohnenbuck et al.

Magnetic Structure of RuSr2GdCu2O8 Determined by Resonant X-Ray Diffraction

B. Bohnenbuck, I. Zegkinoglou, J. Strempfer, C. S. Nelson, H. H. Wu, C. Schüßler-Langeheine, M. Reehuis, E. Schierle, Ph. Leininger, T. Herrmannsdörfer, J. C. Lang, G. Srajer, C. T. Lin, B. Keimer.
Phys. Rev. Lett. 102 (2009), 037205
Leininger et al.

Magnetic structure and orbital state of Ca3Ru2O7 investigated by resonant x-ray diffraction

B. Bohnenbuck, I. Zegkinoglou, J. Strempfer, C. Schüßler-Langeheine, C. S. Nelson, Ph. Leininger, H.-H. Wu, E. Schierle, J. C. Lang, G. Srajer, S. I. Ikeda, Y. Yoshida, K. Iwata, S. Katano, N. Kikugawa, B. Keimer.
Phys. Rev. B 77 (2008), 224412

Recent highlight
Leininger et al.
Animated temperature dependence of the superstructure Bragg peaks in 2H-TaSe2 across the commensurate and incommensurate charge-density-wave transitions, as seen by x-ray diffraction.  
P. Leininger et al., Phys. Rev. B 83 (2011), 233101