SOLVABLE MODEL FOR AN IMPURITY SPIN-COUPLED TO A ONE-DIMENSIONAL SUPERCONDUCTOR

Authors
GOGOLIN AO
Citation
Ao. Gogolin, SOLVABLE MODEL FOR AN IMPURITY SPIN-COUPLED TO A ONE-DIMENSIONAL SUPERCONDUCTOR, Physical review. B, Condensed matter, 54(22), 1996, pp. 16063-16067
Citations number
24
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
22
Year of publication
1996
Pages
16063 - 16067
Database
ISI
SICI code
0163-1829(1996)54:22<16063:SMFAIS>2.0.ZU;2-8
Abstract
A solvable model for a magnetic impurity in a one-dimensional supercon ductor 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 sho rt-range superconducting order. In a restricted (but nontrivial) regio n of parameters, the model is solved by means of bosonization methods. The spectrum and thermodynamic functions are calculated.