Oscillating-charged Andreev bound states and their appearance in UTe2

Satoshi Ando; Shingo Kobayashi; Andreas P. Schnyder; Yasuhiro Asano; Satoshi Ikegaya

doi:10.1103/8npj-w7j5

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Oscillating-charged Andreev bound states and their appearance in UTe2

Satoshi Ando, Shingo Kobayashi, Andreas P. Schnyder, Yasuhiro Asano, Satoshi Ikegaya

DOI 10.1103/8npj-w7j5 · Physical Review B

T1

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Abstract

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 distinct differences in the spectral features of the electron part of the spectral function, the local density of states, and the tunneling conductance spectrum at energies below the superconducting gap. We also discuss the possible occurrence of such Andreev bound states in UTe2 and locally noncentrosymmetric superconductors.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
UTe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
CeRh2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown