Effect of unconventional current-phase relation of Josephson junction on escape rate in ac SQUID

Askerzade İ., Askerbeyli R. T., ÜLKÜ İ.

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, cilt.598, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 598
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.physc.2022.1354068
  • Dergi Adı: PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Josephson junction, Current-phase relation, Escape rate
  • Ankara Üniversitesi Adresli: Evet

Özet

The escape rate of S -> R switching (from superconducting S state to unstable resistive R state) in an ac SQUID on Josephson junction with unconventional current-phase relation was investigated. We used two types of currentphase relations with additional terms to the first harmonic sin phi: a case of the second harmonic sin2 phi and a case of the fractional term sin(phi/2). It was shown that escape rate can exhibit qualitative features in the case of junctions with unconventional current-phase relations.