Nonlinear Proximity Effect in a Hybrid Normal Metal-Superconductor Structure
2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)(2020)
Abstract
Effective-field microscopic approach has been applied to a hybrid structure “normal metal-superconductor” in order to describe a nonlinear proximity effect. It is shown that at high barrier transparency, the phase transition to a superconducting state disappears abruptly. The existence of two gaps points out the intermediate state typical for a firstorder phase transition. The incoherent electron tunneling enlarges the temperature region of the nonequilibrium superconductivity.
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Key words
hybrid normal metal,superconductor structure,tunneling effect,superconductivity,effective field,spectral density,temperature impact
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