2024/03/03 by Satoshi Ando, Ando, Satoshi, Shingo Kobayashi +7
Physics and Astronomy · Chemistry · Chemical Engineering · #Quantum chaos and dynamical systems #Radioactive element chemistry and processing #Catalysis and Oxidation Reactions
paper · pdf · doi:10.48550/arxiv.2403.01502
Surface Andreev bound states, including Majorana bound states in topological superconductors, are typically charge neutral. In this work, we demonstrate the emergence of unconventional charged Andreev bound states in a superconductor with a sublattice degree of freedom, where the sign of charge density of the Andreev bound states oscillates between the two sublattices. The oscillating-charged Andreev bound states lead to a complete breakdown of the proportionality among the electron part of the spectral function, the local density of states, and the tunneling conductance spectrum for energies below the superconducting gap. We also discuss the possible occurrence of these Andreev bound states in UTe2 and locally noncentrosymmetric superconductors.