DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2020 – scientific programme

The DPG Spring Meeting in Dresden had to be cancelled! Read more ...

Parts | Days | Selection | Search | Updates | Downloads | Help

MA: Fachverband Magnetismus

MA 3: Complex Oxides: Bulk Properties (jointly with DS, HL, KFM, MA, O) (joint session TT/HL/MA)

MA 3.5: Talk

Monday, March 16, 2020, 10:30–10:45, HSZ 201

Ca2RuO4: DFT + DMFT study of the magnetic order and dynamical susceptibility — •Dominique Geffroy1,2, Kyo-Hoon Ahn1, Hoshin Gong4, and Jan Kuneš1,31TU Wien, Vienna, Austria — 2Masaryk University, Brno, Czech Republic — 3Czech Academy of Science, Prague, Czech Republic — 4Max Planck POSTECH/Korea Research Initiative, Pohang, Korea

Relativistic Mott insulators are complex compounds in which spin and orbital degrees of freedom become entangled due to a large spin-orbit coupling. Previous studies, both experimental and theoretical[1, 2], have shown that they are good candidates for novel forms of order, including excitonic magnetism[3]. We report results on the theoretical study of the prototypical relativistic Mott insulator Ca2RuO4. We use a realistic ab initio DFT + DMFT approach including SU(2) Coulomb interaction and spin-orbit coupling. The emergence of anti-ferromagnetic order at low temperature is correctly described. We present and discuss the spectra of the the collective modes in the ordered phase within the DMFT approximation.

[1] Jain et al., Nat. Physics 13, 633 (2017)

[2] G. Zhang and E. Pavarini, Phys. Rev. B 95, 075145 (2017)

[3] A. Akbari and G. Khaliullin, Phys. Rev. B 90, 035137 (2014)

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2020 > Dresden