Publikation: Quartet Tomography in Multiterminal Josephson Junctions
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Datum
2024
Autor:innen
Ohnmacht, David
Coraiola, Marco
Garcia Esteban, Juan José
Sabonis, Deividas
Nichele, Fabrizio
Belzig, Wolfgang
Cuevas, Juan Carlos
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Deutsche Forschungsgemeinschaft (DFG): 425217212
European Union (EU): 804273
Swiss National Science Foundation: 200021_201082
European Union (EU): 804273
Swiss National Science Foundation: 200021_201082
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Physical Review B. American Physical Society (APS). 2024, 109, L241407. ISSN 2469-9950. eISSN 2469-9969. Verfügbar unter: doi: 10.1103/PhysRevB.109.L241407
Zusammenfassung
We investigate the detection of quartets in hybrid multiterminal Josephson junctions. Using simple models of quantum dots coupled to superconducting leads, we find that quartets are ubiquitous and show how to rigorously extract their contribution to the current-phase relation (CPR). We also demonstrate that quartets are closely related to the hybridization of Andreev bound states (ABSs) in these systems and propose a method to identify quartets directly in ABS spectra. We illustrate our method by analyzing the spectroscopic measurements of the ABS spectrum in a three-terminal Josephson junction realized in an InAs/Al heterostructure. Our analysis strongly suggests the existence of quartets in the studied hybrid system.
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530 Physik
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Superconductivity, Mesoscale and Nanoscale Physics, Josephson Junctions, Andreev reflection, Josephson effect, Proximity effect
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OHNMACHT, David, Marco CORAIOLA, Juan José GARCIA ESTEBAN, Deividas SABONIS, Fabrizio NICHELE, Wolfgang BELZIG, Juan Carlos CUEVAS, 2024. Quartet Tomography in Multiterminal Josephson Junctions. In: Physical Review B. American Physical Society (APS). 2024, 109, L241407. ISSN 2469-9950. eISSN 2469-9969. Verfügbar unter: doi: 10.1103/PhysRevB.109.L241407BibTex
@article{Ohnmacht2024-06-26Quart-69192.2,
year={2024},
doi={10.1103/PhysRevB.109.L241407},
title={Quartet Tomography in Multiterminal Josephson Junctions},
volume={109},
issn={2469-9950},
journal={Physical Review B},
author={Ohnmacht, David and Coraiola, Marco and Garcia Esteban, Juan José and Sabonis, Deividas and Nichele, Fabrizio and Belzig, Wolfgang and Cuevas, Juan Carlos},
note={Article Number: L241407}
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<dcterms:abstract>We investigate the detection of quartets in hybrid multiterminal Josephson junctions. Using simple models of quantum dots coupled to superconducting leads, we find that quartets are ubiquitous and show how to rigorously extract their contribution to the current-phase relation (CPR). We also demonstrate that quartets are closely related to the hybridization of Andreev bound states (ABSs) in these systems and propose a method to identify quartets directly in ABS spectra. We illustrate our method by analyzing the spectroscopic measurements of the ABS spectrum in a three-terminal Josephson junction realized in an InAs/Al heterostructure. Our analysis strongly suggests the existence of quartets in the studied hybrid system.</dcterms:abstract>
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