Theory of parity-violated Cooper pairs in weakly noncentrosymmetric superconductors
Satoshi Fujimoto
DOI 10.1103/PhysRevB.76.184504 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We propose that in noncentrosymmetric superconductors with weakly asymmetric spin-orbit interaction, the field-induced pair correlation between the spin-orbit split different bands ignored in previous studies yields unique effects; i.e., the Pauli depairing effect is anisotropic in the momentum space and, as a result, magnetic fields induce a point-node-like anisotropic gap structure of the quasiparticle energy even for isotropic s-wave states, which seriously affects thermodynamic quantities at low temperatures. Also, it is shown that when the magnitude of the spin-orbit interaction is smaller than the superconducting gap, the specific heat as a function of the magnetic field exhibits a two-gap-like behavior, even when there is only a single gap. These features characterize parity-violated Cooper pairs in weakly noncentrosymmetric systems. We suggest the possible detection of these effects in the superconductor with weakly broken inversion symmetry Y2C3.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Y2C3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 18 | Pressure not reported | unknown |
Similar papers
Theory of Parity Violated Cooper Pairs in Weakly Noncentrosymmetric Superconductors
similarity 0.96Satoshi Fujimoto · 2007 · arXiv:0707.3297
Source status unknown — claims are unverified
Electronic structure and electron-phonon coupling in the 18K superconductor Y2C3
similarity 0.94D. J. Singh & I. I. Mazin
Source status unknown — claims are unverified
Evidence of nodal gap structure in the noncentrosymmetric superconductor Y2C3
similarity 0.93J. Chen et al.
Source status unknown — claims are unverified
Imaginary phonon modes and phonon-mediated superconductivity in Y2C3
similarity 0.93Niraj K. Nepal et al.
Source status unknown — claims are unverified
Quantum transport in noncentrosymmetric superconductors and thermodynamics of ferromagnetic superconductors
similarity 0.91J. Linder & A. Sudbø
Source status unknown — claims are unverified
High-throughput first-principles search for boride clathrate superconductors with high hardness at ambient pressure
similarity 0.90Xiangru Tao et al.
Source status unknown — claims are unverified