Depairing current density in superconducting film with shear deformation.

In this work, the influence of the shear deformation on the depairing current density in superconducting film is analyzed theoretically. The modified effective free energy is proposed by relating the dependence of the order parameter on the shear deformation. Based on the elastic theory, it is assumed that the coupling energy is the sum of volume change energy and shear strain energy. We obtain the complex deformation dependence of the depairing current density. The results reveal that the shear deformation plays an important role in degrading the current density. © 2012 American Institute of Physics. [ABSTRACT FROM AUTHOR]