Low-lying Quasiparticle Excitations around a Vortex Core in Quantum Limit
超导电性
2016-08-31 v1
摘要
Focusing on a quantum-limit behavior, we study a single vortex in a clean s-wave type-II superconductor by self-consistently solving the Bogoliubov-de Gennes equation. The discrete energy levels of the vortex bound states in the quantum limit is discussed. The vortex core radius shrinks monotonically up to an atomic-scale length on lowering the temperature T, and the shrinkage stops to saturate at a lower T. The pair potential, supercurrent, and local density of states around the vortex exhibit Friedel-like oscillations. The local density of states has particle-hole asymmetry induced by the vortex. These are potentially observed directly by STM.
引用
@article{arxiv.cond-mat/9801166,
title = {Low-lying Quasiparticle Excitations around a Vortex Core in Quantum Limit},
author = {N. Hayashi and T. Isoshima and M. Ichioka and K. Machida},
journal= {arXiv preprint arXiv:cond-mat/9801166},
year = {2016}
}
备注
4 pages, 6 figures