Orbital dependent superconductivity in Sr_2RuO_4

Details Orbital dependent superconductivity in Sr_2RuO_4 Orbital dependent superconductivity in Sr_2RuO_4

1997-02-17

arxiv.org/abs/cond-mat/9702148v1

Physics

Condensed Matter

Superconductivity

5 pages, RevTex, 2 figures

Scientific paper

10.1103/PhysRevLett.78.3374

We show that for superconducting Sr_2RuO_4 any unconventional pairing in the part of the Fermi surface with Ru 4d-xy orbital character is weakly coupled to that with Ru 4d-xz, 4d-yz orbital character. This naturally gives rise to two disparate energy scales in the superconducting state which leads to novel low temperature properties in a variety of thermodynamic and transport properties and which would also account for the large residual density of states seen in specific heat and NQR measurements.

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