Oscillating-charged Andreev Bound States and Their Appearance in UTe$_2$

Bibliographic Details
Title: Oscillating-charged Andreev Bound States and Their Appearance in UTe$_2$
Authors: Ando, Satoshi, Kobayashi, Shingo, Schnyder, Andreas P., Asano, Yasuhiro, Ikegaya, Satoshi
Publication Year: 2024
Collection: Condensed Matter
Subject Terms: Condensed Matter - Superconductivity
More Details: In a superconductor with a sublattice degree of freedom, we find unconventional Andreev bound states whose charge density oscillates in sign between the two sublattices. The appearance of these oscillating-charged Andreev bound states is characterized by a Zak phase, rather than a conventional topological invariant. In contrast to conventional Andreev bound states, for oscillating-charged Andreev bound states the proportionality between the electron-like spectral function, the local density of states and the tunneling conductance is broken. We examine the possible appearance of these novel Andreev bound states in UTe$_2$ and locally noncentrosymmetric superconductors.
Document Type: Working Paper
Access URL: http://arxiv.org/abs/2403.01502
Accession Number: edsarx.2403.01502
Database: arXiv
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