Long-range triplet proximity effect in multiply connected ferromagnet-superconductor hybrids

Article

关键词: FLUXOID QUANTIZATION;    OSCILLATIONS;    TEMPERATURE;    FIELD;   

DOI  :  10.1103/PhysRevB.100.014509

来源: SCIE

【 摘 要 】

Applying the linearized Usadel equations, we consider the nucleation of superconductivity in multiply connected mesoscopic superconductor/ferromagnet (S/F) hybrids such as a thin superconducting ring on a ferromagnet with a uniform in-plane magnetization M and a spin-active S/F interface. We demonstrate that the exchange field in F provokes a switching between superconducting states with different vorticities which may increase the critical temperature(T-c) of the superconductor in a magnetic field. We study the interplay between oscillations in Tc due to the Little-Parks effect and oscillations in Tc induced by the exchange field. Furthermore, we analyze the influence of long-range spin-triplet correlations on the switching between different vorticities.

【 授权许可】

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