TY - JOUR
T1 - Low-lying quasiparticle excitations around a vortex core in quantum limit
AU - Hayashi, N.
AU - Isoshima, T.
AU - Ichioka, M.
AU - Machida, K.
PY - 1998
Y1 - 1998
N2 - 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 are 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 scanning tunneling microscopy.
AB - 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 are 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 scanning tunneling microscopy.
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U2 - 10.1103/PhysRevLett.80.2921
DO - 10.1103/PhysRevLett.80.2921
M3 - Article
AN - SCOPUS:4243736698
VL - 80
SP - 2921
EP - 2924
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 13
ER -