Reentrance and Magnetic-Field-Induced Superconductivity with Kondo Impurities: Bulk and Proximity Systems
Abstract
Reentrant behavior is known to exist and magnetic-field-induced superconductivity has been predicted in superconductors with Kondo impurities. We present a simple framework for understanding these phenomena and generalize it to explain the long-standing puzzle of paramagnetic reentrance in thick proximity systems as due to small amounts of Kondo impurities.
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