Electromagnetic response of a vortex in layered superconductors
Electromagnetic response of a vortex in layered superconductors
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DOI：
10.1103/physrevb.60.10447
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发表时间：
1999-10-01
影响因子：
3.7
通讯作者：
Rainer, D
中科院分区：
文献类型：
--
作者：
Eschrig, M;Sauls, JA;Rainer, D
我们计算了层状超导体中涡旋核对交流电磁场的响应。我们特别研究了中间洁净状态，其中涡核束缚态的展宽与水平间距相当或大于水平间距。通过自一致地确定分布函数和激发谱，得到了序参量、杂质自能和电流的响应。涡旋核心的费米子激励耦合的序参量集体模式主导了响应。在低频率下，这种耦合导致涡旋核心的吸收大大增强。[s0163 - 1829(99) 11237 - 2]。
We calculate the response of a vortex core in a layered superconductor to an ac electromagnetic field. In particular we investigate the intermediate clean regime, where the broadening of the vortex core bound states is comparable to or larger than the level spacing. The response of the order parameter, impurity self-energy, and currents are obtained by a self-consistent determination of the distribution functions and the excitation spectrum. The response is dominated by order parameter collective modes coupled to the fermion excitations of the vortex core. At low frequencies this coupling leads to substantially enhanced absorption in the vortex core. [S0163-1829(99)11237-2].