Solvable model for an impurity spin coupled to a one-dimensional superconductor

Alexander O. Gogolin

doi:10.1103/PhysRevB.54.16063

← Back to search

Solvable model for an impurity spin coupled to a one-dimensional superconductor

Alexander O. Gogolin

DOI 10.1103/PhysRevB.54.16063 · Physical Review B

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

A solvable model for a magnetic impurity in a one-dimensional superconductor is proposed. The model consists of the impurity spin coupled to the edge of a quantum wire. The electron gas in the wire is dominated by attractive mutual interactions and forms a gapped state with a short-range superconducting order. In a restricted (but nontrivial) region of parameters, the model is solved by means of bosonization methods. The spectrum and thermodynamic functions are calculated. © 1996 The American Physical Society.