Hidden symmetry in interacting-quantum-dot-based multiterminal Josephson junctions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00587249" target="_blank" >RIV/68378271:_____/24:00587249 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/24:10479453

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevLett.132.126505" target="_blank" >https://doi.org/10.1103/PhysRevLett.132.126505</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.132.126505" target="_blank" >10.1103/PhysRevLett.132.126505</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hidden symmetry in interacting-quantum-dot-based multiterminal Josephson junctions

Popis výsledku v původním jazyce

We study a multiterminal Josephson junction based on an interacting quantum dot coupled to n superconducting BCS leads. Using an Anderson type model of a local level with an arbitrary on-site Coulomb repulsion, we uncover its surprising equivalence with an effective two-terminal junction with symmetric couplings to appropriately phase-biased leads. Regardless of the strength of the Coulomb interaction, this hidden symmetry enables us to apply well-established numerical and theoretical tools for exact evaluation of various physical quantities, and imposes strict relations among them. Focusing on three-terminal devices, we then demonstrate several phenomena such as the existence of the finite energy band crossings and superconducting transistor and diode effects, as well as current phase relation modulation.

Název v anglickém jazyce

Hidden symmetry in interacting-quantum-dot-based multiterminal Josephson junctions

Popis výsledku anglicky

We study a multiterminal Josephson junction based on an interacting quantum dot coupled to n superconducting BCS leads. Using an Anderson type model of a local level with an arbitrary on-site Coulomb repulsion, we uncover its surprising equivalence with an effective two-terminal junction with symmetric couplings to appropriately phase-biased leads. Regardless of the strength of the Coulomb interaction, this hidden symmetry enables us to apply well-established numerical and theoretical tools for exact evaluation of various physical quantities, and imposes strict relations among them. Focusing on three-terminal devices, we then demonstrate several phenomena such as the existence of the finite energy band crossings and superconducting transistor and diode effects, as well as current phase relation modulation.

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

<a href="/cs/project/GF23-05263K" target="_blank" >GF23-05263K: Supravodivé nanohybridy mimo rovnováhu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Physical Review Letters

ISSN

0031-9007

e-ISSN

1079-7114

Svazek periodika

132

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

126505

Kód UT WoS článku

001202102900009

EID výsledku v databázi Scopus

2-s2.0-85188648075