Attractive interaction between vortices in type-II superconductors at arbitrary temperatures
Attractive interaction between vortices in type-II superconductors at arbitrary temperatures
复制标题
任意温度下II型超导体中涡旋之间的吸引相互作用
DOI：
10.1007/bf00654737
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发表时间：
1973
期刊：
影响因子：
--
通讯作者：
M. Leung
中科院分区：
文献类型：
--
作者：
M. Leung
我们发现，对于具有局域或非局域磁效应的 II 型超导体，当 Re(Λ−1)>Σ0−1 时，涡旋之间会发生吸引相互作用，其中 [Re(1/Λ)]−1 和 Σ0 分别是任意温度下的磁场衰减长度和有序参数。涡旋之间的相互作用对于所有发生场反转的 II 型超导体来说都是有吸引力的，但场反转并不是吸引相互作用的原因。另一方面，磁场的振荡行为有助于吸引相互作用。 Ginzburg-Landau 参数的临界值（低于该值会发生吸引相互作用）基本上满足方程 Re (Λ−1)=Σ0−1。
We show that attractive interaction between vortices occurs when Re(Λ−1)>ξ0−1for type-II superconductors with local or nonlocal magnetic effects, where [Re(1/Λ)]−1and ξ0are, respectively, the decay length of the magnetic field and the order parameter at arbitrary temperatures. The interaction between vortices is attractive for all those type-II superconductors in which field reversal occurs, but field reversal is not a cause of attractive interaction. On the other hand, oscillatory behavior of magnetic fields contributes to attractive interaction. The critical values of the Ginzburg-Landau parameter, below which attractive interaction occurs, satisfy essentially the equation Re (Λ−1)=ξ0−1.