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  Dissipation in a Simple Model of a Topological Josephson Junction

Matthews, P., Ribeiro, P., & García-García, A. M. (2014). Dissipation in a Simple Model of a Topological Josephson Junction. Physical Review Letters, 112(24): 247001, pp. 1-5. doi:10.1103/PhysRevLett.112.247001.

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Matthews, Paul1, Autor
Ribeiro, Pedro2, Autor           
García-García, Antonio M.1, Autor
Affiliations:
1external, ou_persistent22              
2Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              

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 Zusammenfassung: The topological features of low-dimensional superconductors have created a lot of excitement recently because of their broad range of applications in quantum information and their potential to reveal novel phases of quantum matter. A potential problem for practical applications is the presence of phase slips that break phase coherence. Dissipation in nontopological superconductors suppresses phase slips and can restore long-range order. Here, we investigate the role of dissipation in a topological Josephson junction. We show that the combined effects of topology and dissipation keep phase and antiphase slips strongly correlated so that the device is superconducting even under conditions where a nontopological device would be resistive. The resistive transition occurs at a critical value of the dissipation that is 4 times smaller than that expected for a conventional Josephson junction. We propose that this difference could be employed as a robust experimental signature of topological superconductivity.

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 Datum: 2014-06-18
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: ISI: 000338536200018
DOI: 10.1103/PhysRevLett.112.247001
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Titel: Physical Review Letters
  Andere : Phys. Rev. Lett.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Woodbury, N.Y. : American Physical Society
Seiten: - Band / Heft: 112 (24) Artikelnummer: 247001 Start- / Endseite: 1 - 5 Identifikator: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1