Phys. Rev. Lett. 101, 026406 (2008) [4 pages]Strong Spin-Orbit Coupling Effects on the Fermi Surface of Sr2RuO4 and Sr2RhO4Received 29 February 2008; published 11 July 2008 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. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.026406
DOI:
10.1103/PhysRevLett.101.026406
PACS:
71.18.+y, 74.70.Pq, 79.60.−i
See AlsoSee Also: A. Tamai, M. P. Allan, J. F. Mercure, W. Meevasana, R. Dunkel, D. H. Lu, R. S. Perry, A. P. Mackenzie, D. J. Singh, Z.-X. Shen, and F. Baumberger, Fermi Surface and van Hove Singularities in the Itinerant Metamagnet Sr3Ru2O7, Phys. Rev. Lett. 101, 026407 (2008). See Also: Guo-Qiang Liu, V. N. Antonov, O. Jepsen, and O. K. Andersen., Coulomb-Enhanced Spin-Orbit Splitting: The Missing Piece in the Sr2RhO4 Puzzle, Phys. Rev. Lett. 101, 026408 (2008). |
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