Response of High Temperature Superconductors to a Step in Magnetic Field

  • Charles P. Bean


The “critical state” model that has been used to characterize the response of strongly Type II superconductors assumes that a critical current is caused to flow locally by any electric field induced in the superconductor1 . This simple postulate is sufficient to describe the losses in commercial superconductors2 and the details of their responses to alternating magnetic fields3. High temperature superconductors near the critical temperature show a more complicated behavior. There is significant thermal activation of the movement of flux4. In this paper we use a simple extension of the critical state model that includes a flux flow resistivity. It is used to calculate the response to a step in magnetic field.


Magnetic Field High Temperature Superconductor Critical Current Density Pulse Magnetic Field Dimensionless Unit 
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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Charles P. Bean
    • 1
  1. 1.Physics DepartmentRensselaer Polytechnic InstituteTroyUSA

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