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arXiv 1306.6771cond-mat.supr-concond-mat.mes-hall
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准粒子非平衡分布下超导体-正常金属双层系统的面内FFLO不稳定性

In-plane FFLO instability in superconductor-normal metal bilayer system under non-equilibrium quasiparticle distribution

I. V. Bobkova, A. M. Bobkov

摘要:

据预测,一类新的系统-超导体/正常金属(S/N)异质结构在接近临界温度的非平衡条件下可以揭示面内Fulde-Ferrel-Larkin-Ovchinnikov(FFLO)不稳定性.它不需要系统中的任何塞曼相互作用。对于非平衡分布的S/N异质结,存在一个天然的、易于调节的参数--电压,它可以控制FFLO态。这种FFLO状态可以是不同的类型:平面波,驻波,甚至二维结构都是可能的。某些类型的FFLO状态伴随有磁通量,这可以通过实验观察到。所有类型的FFLO态都可以通过系统的线性响应对$T_c$附近的外加磁场的温度依赖性来揭示,这与均匀态有很大不同。

英文摘要:

It is predicted that a new class of systems - superconductor/normal metal (S/N) heterostructures can reveal the in-plane Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) instability under nonequilibrium conditions at temperatures close to the critical temperature. It does not require any Zeeman interaction in the system. For S/N heterostructures under non-equilibrium distribution there is a natural easily adjustable parameter - voltage, which can control the FFLO-state. This FFLO-state can be of different types: plane wave, stationary wave and, even, 2D-structures are possible. Some types of the FFLO-state are accompanied by the magnetic flux, which can be observed experimentally. All the types of the FFLO-state can reveal through the temperature dependence of the linear response of the system on the applied magnetic field near $T_c$, which strongly differs from that one for the homogeneous state.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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