Analysis of field-angle dependent specific heat in unconventional superconductors: a comparison between Doppler-shift method and Kramer-Pesch approximation

Abstract

We theoretically discuss the magnetic-field-angle dependence of the zero-energy density of states (ZEDOS) in superconductors. Point-node and line-node superconducting gaps on spherical and cylindrical Fermi surfaces are considered. The Doppler-shift (DS) method and the Kramer-Pesch approximation (KPA) are used to calculate the ZEDOS. Numerical results show that consequences of the DS method are corrected by the KPA.

2 pages, 4 figures; To be published in Proc. of M2S-IX 2009, Tokyo (Physica C)

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Cited by in corpus (2)

• Field-angle dependence of the quasiparticle scattering inside a vortex core in unconventional superconductors
• Phase-Sensitive Flux-Flow resistivity in Unconventional Superconductors