Perturbation theory for an Anderson quantum dot asymmetrically attached to two superconducting leads

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00465518" target="_blank" >RIV/68378271:_____/16:00465518 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/16:10321714

Result on the web

<a href="http://dx.doi.org/10.1103/PhysRevB.93.024523" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.93.024523</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.93.024523" target="_blank" >10.1103/PhysRevB.93.024523</a>

Result language

angličtina

Original language name

Perturbation theory for an Anderson quantum dot asymmetrically attached to two superconducting leads

Original language description

Self-consistent perturbation expansion up to the second order in the interaction strength is used to study a single-level quantum dot with local Coulomb repulsion attached asymmetrically to two generally different superconducting leads. At zero temperature and a wide range of other parameters, the spin-symmetric version of the expansion yields excellent results for the position of the zeropi impurity quantum phase transition boundary and Josephson current together with the energy of Andreev bound states in the 0 phase as confirmed by numerical calculations using the numerical renormalization group method. We analytically prove that the method is charge conserving as well as thermodynamically consistent. Explicit formulas for the position of the zero-pi phase boundary are presented for the Hartree-Fock approximation as well as for its variant called generalized atomic limit.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GJ15-08740Y" target="_blank" >GJ15-08740Y: Spin current generation on a femtosecond timescale</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review B

ISSN

2469-9950

e-ISSN

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Volume of the periodical

93

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

18

Pages from-to

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UT code for WoS article

000369219600003

EID of the result in the Scopus database

2-s2.0-85000402242