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arXiv 0710.0876cond-mat.supr-concond-mat.str-el
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超导体中的自旋迈斯纳效应及迈斯纳效应的起源

Spin Meissner Effect in Superconductors and the Origin of the Meissner Effect

J. E. Hirsch

摘要:

我们提出了超导体中迈斯纳效应的动力学解释,并预测了自旋迈斯纳效应的存在:在没有外加场的情况下,宏观自旋电流在超导体表面的伦敦穿透深度$λ_L$内流动,载流子密度=超流密度和载流子速度$v=\hbar/(4m_eλ_L$)($m_e=$裸电子质量)。库珀对的两个成员以相反的方向在半径为$2λ_L$的轨道上循环,库珀对中的自旋流具有轨道角动量$\hbar$。我们的描述还提供了一个“几何”的解释之间的差异I型和II型超导体。

英文摘要:

We propose a dynamical explanation of the Meissner effect in superconductors and predict the existence of a spin Meissner effect: that a macroscopic spin current flows within a London penetration depth $λ_L$ of the surface of superconductors in the absence of applied external fields, with carrier density = the superfluid density and carrier speed $v=\hbar/(4m_eλ_L$) ($m_e=$bare electron mass). The two members of a Cooper pair circulate in orbits of radius $2λ_L$ in opposite direction and the spin current in a Cooper pair has orbital angular momentum $\hbar$. Our description also provides a 'geometric' interpretation of the difference between type I and type II superconductors.

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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