Self-consistent electronic structure of multiquantum vortices in superconductors at $T\ll T_c$

Abstract

We investigate the multiquantum vortex states in type-II superconductor both in "clean" and "dirty" regimes defined by impurity scattering rate. Within quasiclassical approach we calculate self-consistently the order parameter distributions and electronic local density of states (LDOS) profiles. In the clean case we find the low temperature vortex core anomaly predicted analytically in G.E. Volovik, JETP Lett. {\bf 58}, 455 (1993) and obtain the interference patterns in LDOS distributions analogous to found previously in the framework of Bogolubov-de Gennes theory. In dirty regime the multiquantum vortices feature a peculiar plateau in the zero-energy LDOS profile which can be considered as an experimental hallmark of multiquantum vortex formation in mesoscopic superconductors.

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References in corpus (2)

• Scanning tunneling spectroscopy of high-temperature superconductors
• Superconducting density of states and vortex cores of 2H-NbS2

Cited by in corpus (4)

• Electronic properties of emergent topological defects in chiral $p$-wave superconductivity
• Identification of multiple-flux-quanta vortices by core states in the two-band superconductor Pb
• Electronic structure of mesoscopic superconducting disk: Quasiparticle tunneling between the giant vortex core and disk edge
• Quantum interference among vortex bound states in superconductors