Negative Differential Resistance due to Nonlinearities in Single and Stacked Josephson Junctions

Giovanni Filatrella, Vincenzo Pierro, Niels Falsig Pedersen, Mads Peter Sørensen

Research output: Contribution to journalJournal articleResearchpeer-review


Josephson junction systems with a negative differential resistance (NDR) play an essential role for applications. As a well-known example, long Josephson junctions of the BSCCO type have been considered as a source of terahertz radiation in recent experiments. Numerical results for the dynamics of the fluxon system have demonstrated that a cavity induced NDR plays a crucial role for the emission of electromagnetic radiation. We consider the case of an NDR region in the McCumber curve itself of a single junction and found that it has an effect on the emission of electromagnetic radiation. Two different shapes of NDR region are considered, and we found that it is essential to distinguish between current bias and voltage bias.
Original languageEnglish
Article number1800407
JournalIEEE Transactions on Applied Superconductivity
Issue number6
Number of pages7
Publication statusPublished - 2014


  • Engineered Materials, Dielectrics and Plasmas
  • Fields, Waves and Electromagnetics
  • Cavity resonators
  • Equations
  • Josephson junctions
  • Mathematical model
  • Millimeter-wave devices
  • nonlinear circuits
  • nonlinear optics
  • nonlinear oscillators
  • Oscillators
  • Resistance
  • Resistors
  • superconducting devices

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