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題 名 | The Effect of Anisotropy on Vortex Lattice Structure and Flux Flow in d-Wave Superconductors |
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作 者 | Chang,D.; Mou,C. Y.; Rosenstein,B.; Wu,C. L.; | 書刊名 | Chinese Journal of Physics |
卷 期 | 36:2(Part2) 民87.04 |
頁 次 | 頁238-244 |
分類號 | 337.473 |
關鍵詞 | 超導體; |
語 文 | 英文(English) |
英文摘要 | We describe effects of anisotropy caused by the crystal lattice in d-wave superconductors using effective free energy approach in which only one order parameter, the d-wave order parameter field, is used. The Abrikosov parameter A is calculated analytically for both static and moving vortex lattices. The analytic expression provides an unambiguous determination of the vortex lattice structure. We also calculate both direct and Hall I-V curves as functions of the angle between the current and the crystal lattice orientation. In particular, we show that near Hc₂ the fourfold symmetry of the crystal lattice causes asymmetric motions of particles and holes, resulting in a non-vanishing Hall current. |
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