Anderson model in a superconductor: Φ-derivable theory

Ari T. Alastalo, Robert J. Joynt, Martti M. Salomaa

Research output: Contribution to journalOther journal contributionScientific

3 Citations (Scopus)

Abstract

We introduce a new φ-derivable approach for the Anderson impurity model in a BCS superconductor. The regime of validity of this conserving theory extends well beyond that of the Hartree - Fock approximation. This is the first generalization of the U-perturbation theory to encompass a superconductor.
Original languageEnglish
Pages (from-to)L63-L68
JournalJournal of Physics: Condensed Matter
Volume10
Issue number3
DOIs
Publication statusPublished - 1998
MoE publication typeB1 Article in a scientific magazine

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Superconducting materials
Hartree approximation
perturbation theory
Impurities
impurities

Cite this

Alastalo, Ari T. ; Joynt, Robert J. ; Salomaa, Martti M. / Anderson model in a superconductor: Φ-derivable theory. In: Journal of Physics: Condensed Matter. 1998 ; Vol. 10, No. 3. pp. L63-L68.
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Anderson model in a superconductor: Φ-derivable theory. / Alastalo, Ari T.; Joynt, Robert J.; Salomaa, Martti M.

In: Journal of Physics: Condensed Matter, Vol. 10, No. 3, 1998, p. L63-L68.

Research output: Contribution to journalOther journal contributionScientific

TY - JOUR

T1 - Anderson model in a superconductor: Φ-derivable theory

AU - Alastalo, Ari T.

AU - Joynt, Robert J.

AU - Salomaa, Martti M.

N1 - Cited By :2 Export Date: 16 May 2018

PY - 1998

Y1 - 1998

N2 - We introduce a new φ-derivable approach for the Anderson impurity model in a BCS superconductor. The regime of validity of this conserving theory extends well beyond that of the Hartree - Fock approximation. This is the first generalization of the U-perturbation theory to encompass a superconductor.

AB - We introduce a new φ-derivable approach for the Anderson impurity model in a BCS superconductor. The regime of validity of this conserving theory extends well beyond that of the Hartree - Fock approximation. This is the first generalization of the U-perturbation theory to encompass a superconductor.

U2 - 10.1088/0953-8984/10/3/003

DO - 10.1088/0953-8984/10/3/003

M3 - Other journal contribution

VL - 10

SP - L63-L68

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

IS - 3

ER -