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arXiv · 0806.0426

Topological properties of spin-triplet superconductors and the Fermi surface topology in the normal state

Masatoshi Sato
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Abstract

We report intimate relations between topological properties of full gapped spin-triplet superconductors with time-reversal invariance and the Fermi surface topology in the normal states. An efficient method to calculate the Z2 invariants and the winding number for the spin-triplet superconductors is developed, and connections between these topological invariants and the Fermi surface structures in the normal states are pointed out. We also obtain a correspondence between the Fermi surface topology and gapless surface states in the superconducting states. The correspondence is inherent to spin-triplet superconductivity.

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Masatoshi Sato. 2009-06-26. Topological properties of spin-triplet superconductors and the Fermi surface topology in the normal state. https://doi.org/10.1103/physrevb.79.214526

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