Strong spin-orbit coupling effects on the Fermi surface of Sr 2 RuO 4 and Sr 2 RhO 4

• Verfasst von: Haverkort, Maurits W. [VerfasserIn]
• Titel: Strong spin-orbit coupling effects on the Fermi surface of Sr 2 RuO 4 and Sr 2 RhO 4
• Verf.angabe: M.W. Haverkort, I.S. Elfimov, L.H. Tjeng, G.A. Sawatzky, and A. Damascelli
• Fussnoten: Die Zahlen "2" und "4" im Titel sind jeweils tiefgestellt ; Gesehen am 07.11.2017
• Titel Quelle: Enthalten in: Physical review letters
• Jahr Quelle: 2008
• Band/Heft Quelle: 101(2008,2) Artikel-Nummer 026406, 4 Seiten
• ISSN Quelle: 1079-7114
• DOI: doi:10.1103/PhysRevLett.101.026406
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565096207

Abstract

We present a first-principles study of spin-orbit coupling effects on the Fermi surface of Sr2RuO4 and Sr2RhO4. For nearly degenerate bands, spin-orbit coupling leads to a dramatic change of the Fermi surface with respect to nonrelativistic calculations; as evidenced by the comparison with experiments on Sr2RhO4, it cannot be disregarded. For Sr2RuO4, the Fermi surface modifications are more subtle but equally dramatic in the detail: Spin-orbit coupling induces a strong momentum dependence, normal to the RuO2 planes, for both orbital and spin character of the low-energy electronic states. These findings have profound implications for the understanding of unconventional superconductivity in Sr2RuO4.