1204.5618 (Yuval B. Simons et al.)

Reentrance and Magnetic-Field-Induced Superconductivity with Kondo
Impurities: Bulk and Proximity Systems    [PDF]

Yuval B. Simons, Ora Entin-Wohlman, Yuval Oreg, Yoseph Imry

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.

View original: http://arxiv.org/abs/1204.5618