Vortex-induced strain and flux lattices in anisotropic superconductors.
Vortex-induced strain and flux lattices in anisotropic superconductors.
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DOI：
10.1103/physrevb.51.15344
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发表时间：
1995-06
期刊：
影响因子：
--
通讯作者：
Kogan;Bulaevskii;Miranovic;Dobrosavljevic-Grujic
中科院分区：
文献类型：
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作者：
Kogan;Bulaevskii;Miranovic;Dobrosavljevic-Grujic
评估了超导体中伴随涡旋成核并由于超导相和正相的比体积差异而产生的应变。各向异性材料中的应变会导致额外的涡间相互作用，与更强但范围有限的伦敦力相比，这种相互作用的范围很长。在具有很强的超导压力依赖性的材料（例如 NbSe{sub 2}）中，应变引起的相互作用会影响通量晶格的结构。对于平行于 NbSe{sub 2} 的 {ital c} 轴的场，通量晶格被锁定在晶体上，这一事实无法通过伦敦或谐波弹性相互作用来解释。讨论了在这种情况下涡的非简谐弹性相互作用的可能作用。
Strains in superconductors that accompany vortex nucleation and arise due to the difference in the specific volumes of the superconducting and normal phases are evaluated. The strain in anisotropic materials causes an extra intervortex interaction, which is long range as compared to a stronger but finite-range London force. In materials with a strong pressure dependence of superconductivity (such as NbSe{sub 2}) the strain-induced interaction affects the structure of the flux lattices. For the field parallel to the {ital c} axis of NbSe{sub 2} the flux lattice is locked on the crystal, a fact that cannot be explained either by London or by harmonic elastic interactions. The possible role of anharmonic elastic interactions of vortices for this case is discussed.