Ground state topology of a four-terminal superconducting double quantum dot
Anno: 2023
Autori: Teshler L., Weisbrich H., Sturm J., Klees RL., Rastelli G., Belzig W.
Affiliazione autori: Univ Konstanz, Fachbereich Phys, Univ Str 40, D-78457 Constance, Germany; Julius Maximilians Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany; Univ Trento, Pitaevskii BEC Ctr, CNR, INO, I-38123 Trento, Italy; Univ Trento, Dipartimento Fis, I-38123 Trento, Italy.
Abstract: In recent years, various classes of systems were proposed to realize topological states of matter. One of them are multiterminal Josephson junctions where topological Andreev bound states are constructed in the synthetic space of superconducting phases. Crucially, the topology in these systems results in a quantized transconductance between two of its terminals comparable to the quantum Hall effect. In this work, we study a double quantum dot with four superconducting terminals and show that it has an experimentally accessible topological regime in which the non-trivial topology can be measured. We also include Coulomb repulsion between electrons which is usually present in experiments and show how the topological region can be maximized in parameter space.
Giornale/Rivista: SCIPOST PHYSICS
Volume: 15 (5) Da Pagina: 214-1 A: 214-17
Maggiori informazioni: This work was financially supported by the Deutsche Forschungsgemeinschaft (DFG; German Research Foundation) project no. 467596333 and project no. 425217212 via the Collaborative Research Center SFB 1432.Parole chiavi: Andreev Bound-states; Josephson; TransportDOI: 10.21468/SciPostPhys.15.5.214Citazioni: 4dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-15Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui
