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Matthews P, Ribeiro P, García-García AM. Dissipation in a simple model of a topological Josephson junction. Phys Rev Lett. 2014;112(24):247001doi: 10.1103/PhysRevLett.112.247001.
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. https://doi.org/10.1103/PhysRevLett.112.247001
Matthews, Paul, et al. "Dissipation in a simple model of a topological Josephson junction." Physical review letters vol. 112,24 (2014): 247001. doi: https://doi.org/10.1103/PhysRevLett.112.247001
Matthews P, Ribeiro P, García-García AM. Dissipation in a simple model of a topological Josephson junction. Phys Rev Lett. 2014 Jun 20;112(24):247001. doi: 10.1103/PhysRevLett.112.247001. Epub 2014 Jun 18. PMID: 24996102.
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Phys Rev Lett. 2014 Jun 20;112(24):247001. doi: 10.1103/PhysRevLett.112.247001. Epub 2014 Jun 18.

Dissipation in a simple model of a topological Josephson junction.

Physical review letters

Paul Matthews, Pedro Ribeiro, Antonio M García-García

Affiliations

  1. CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain and University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
  2. Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, D-01187 Dresden, Germany and Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, D-01187 Dresden, Germany and CFIF, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal.
  3. CFIF, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal and TCM Group, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.

PMID: 24996102 DOI: 10.1103/PhysRevLett.112.247001

Abstract

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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