Josephson Effects

  • Shigeji Fujita
  • Kei Ito
  • Salvador Godoy

Josephson effects are quantum statistical effects manifested on a macroscopic scale. A close analogy emerges between a supercurrent and a laser. Supercurrents, not lasers, respond to electromagnetic fields, however. Basic equations for the current passing a Josephson junction are derived. They are used to discuss SQUID and AC Josephson effects. Analyses of Shapiro steps in the V–I diagram show that the quasi-wavefunction \(\Psi_{\sigma}\) rather than the G–L wavefunction \(\Psi_{\sigma}^{\prime}\) represents correct pairon dynamics.


Potential Drop Josephson Junction Josephson Effect Linear Dispersion Relation Shapiro Step 
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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Department of PhysicsState University of New YorkBuffaloUSA
  2. 2.National Center for UniversityTokyoJapan
  3. 3.Department of FísicaUniversidad Nacional Autónoma de MéxicoMéxicoMéxico

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