Split of zero-bias conductance peak in normal-metal/d-wave superconductor junctions

Yasuhiro Asano; Yukio Tanaka; Satoshi Kashiwaya

doi:10.1103/PhysRevB.69.214509

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Split of zero-bias conductance peak in normal-metal/d-wave superconductor junctions

Yasuhiro Asano, Yukio Tanaka, Satoshi Kashiwaya

DOI 10.1103/PhysRevB.69.214509 · Physical Review B

T1

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Abstract

Effects of impurity scatterings on the conductance in normal-metal/d-wave superconductor junctions are discussed by using the single-site approximation. So far, the split of the zero-bias conductance peak has been believed to be evidence of the broken time reversal symmetry states at the surface of high-Tc superconductors. In this paper, however, it is shown that the impurity scattering near the interface also causes the split of the zero-bias conductance peak. Typical conductance spectra observed in experiments at finite temperatures and under external magnetic fields are explained well by the present theory.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La3Ni2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown