Midgap surface states as a novel signature for dxa2-xb2-wave superconductivity

Chia-Ren Hu

doi:10.1103/PhysRevLett.72.1526

← Back to search

Midgap surface states as a novel signature for dxa2-xb2-wave superconductivity

Chia-Ren Hu

DOI 10.1103/PhysRevLett.72.1526 · Physical Review Letters

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

It is shown that a sizable areal density of midgap states exists on a {110} surface of a dxa2-xb2-wave superconductor, which can either have vacuum or an insulator at the surface, or be separated from vacuum or an insulator by a clean, size-quantized, normal metal overlayer. These ‘‘midgap’’ states have many observable consequences—some of which are briefly discussed here—which can be used as a clear signature to distinguish between d-wave and anisotropic s-wave superconductors.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown