Quantum limiting behaviors of a vortex core in an anisotropic gap superconductor
Superconductivity
2015-06-03 v2
Abstract
Quantized bound states at a vortex core are discretized in YNiBC. By using scanning tunneling spectroscopy with an unprecedented 0.1 nm spatial resolution, we find and identify the localized spectral structure, where in addition to the first main peak with a positive low energy, a second subpeak coming from the fourfold symmetric gap structure is seen inside the energy gap. Those spectral features are understood by solving the Bogoliubov-de Gennes equation for a fully three-dimensional gap structure. A particle-hole asymmetric spectrum at the core site and quantum oscillation in the spectra are clearly observed.
Keywords
Cite
@article{arxiv.1112.3609,
title = {Quantum limiting behaviors of a vortex core in an anisotropic gap superconductor},
author = {S. Kaneko and K. Matsuba and M. Hafiz and K. Yamasaki and E. Kakizaki and N. Nishida and H. Takeya and K. Hirata and T. Kawakami and T. Mizushima and K. Machida},
journal= {arXiv preprint arXiv:1112.3609},
year = {2015}
}
Comments
5 pages, 4 figures