Tunable reentrant Kondo effect in quantum dots coupled to metal-superconducting hybrid reservoirs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00553606" target="_blank" >RIV/68378271:_____/21:00553606 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10430433

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevB.104.035437" target="_blank" >https://doi.org/10.1103/PhysRevB.104.035437</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.104.035437" target="_blank" >10.1103/PhysRevB.104.035437</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tunable reentrant Kondo effect in quantum dots coupled to metal-superconducting hybrid reservoirs

Popis výsledku v původním jazyce

We elaborate on concept of reentrant Kondo effect in quantum impurities/dots coupled to hybrid metal-semiconductor contacts. By noticing the equivalence of the originally suggested semiconducting arrangement to an analogous three-terminal quantum dot setup with a normal and two phase-biased superconducting leads introduced in our recent work, we put this effect into a new physical context. First, we identify the superconducting counterpart of the reentrant Kondo effect and, consequently, reveal its fragility with respect to an underlying doublet-singlet quantum phase transition induced by the particle-hole asymmetry of the reservoir densities of states. Furthermore, we analyze the experimental feasibility of observing the reentrant Kondo effect in its superconducting realization concluding that even present day experiments might see the onset of the reentrant behavior, but fully developed Kondo features cannot be reached due to the required vast separation of energy/temperature scales.

Název v anglickém jazyce

Tunable reentrant Kondo effect in quantum dots coupled to metal-superconducting hybrid reservoirs

Popis výsledku anglicky

We elaborate on concept of reentrant Kondo effect in quantum impurities/dots coupled to hybrid metal-semiconductor contacts. By noticing the equivalence of the originally suggested semiconducting arrangement to an analogous three-terminal quantum dot setup with a normal and two phase-biased superconducting leads introduced in our recent work, we put this effect into a new physical context. First, we identify the superconducting counterpart of the reentrant Kondo effect and, consequently, reveal its fragility with respect to an underlying doublet-singlet quantum phase transition induced by the particle-hole asymmetry of the reservoir densities of states. Furthermore, we analyze the experimental feasibility of observing the reentrant Kondo effect in its superconducting realization concluding that even present day experiments might see the onset of the reentrant behavior, but fully developed Kondo features cannot be reached due to the required vast separation of energy/temperature scales.

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

104

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

035437

Kód UT WoS článku

000680427900004

EID výsledku v databázi Scopus

2-s2.0-85111684722