Spectral and transport properties of a half-filled Anderson impurity coupled to phase-biased superconducting and metallic leads

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00547677" target="_blank" >RIV/68378271:_____/21:00547677 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10426550

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevB.103.035419" target="_blank" >https://doi.org/10.1103/PhysRevB.103.035419</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.103.035419" target="_blank" >10.1103/PhysRevB.103.035419</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spectral and transport properties of a half-filled Anderson impurity coupled to phase-biased superconducting and metallic leads

Popis výsledku v původním jazyce

We derive and apply a general scheme for mapping a setup consisting of a half-filled single-level quantum dot coupled to one normal metallic and two superconducting phase-biased leads onto an ordinary half-filled single impurity Anderson model with single modified tunneling density of states. The theory allows for the otherwise unfeasible application of the standard numerical renormalization group and enables us to obtain phase-dependent local spectral properties as well as phase-dependent induced pairing and Josephson current. The resulting transport properties match well with the numerically exact continuous-time hybridization-expansion quantum Monte Carlo. For weakly coupled normal electrode, the spectral properties can be interpreted in terms of normal-electrode-broadened Andreev bound states with phase-dependent position analogous to the superconducting Anderson model, which coexist in the pi-like phase with a Kondo peak whose phase-dependent Kondo temperature is extracted.

Název v anglickém jazyce

Spectral and transport properties of a half-filled Anderson impurity coupled to phase-biased superconducting and metallic leads

Popis výsledku anglicky

We derive and apply a general scheme for mapping a setup consisting of a half-filled single-level quantum dot coupled to one normal metallic and two superconducting phase-biased leads onto an ordinary half-filled single impurity Anderson model with single modified tunneling density of states. The theory allows for the otherwise unfeasible application of the standard numerical renormalization group and enables us to obtain phase-dependent local spectral properties as well as phase-dependent induced pairing and Josephson current. The resulting transport properties match well with the numerically exact continuous-time hybridization-expansion quantum Monte Carlo. For weakly coupled normal electrode, the spectral properties can be interpreted in terms of normal-electrode-broadened Andreev bound states with phase-dependent position analogous to the superconducting Anderson model, which coexist in the pi-like phase with a Kondo peak whose phase-dependent Kondo temperature is extracted.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

2469-9969

Svazek periodika

103

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

035419

Kód UT WoS článku

000609259800003

EID výsledku v databázi Scopus

2-s2.0-85100273189