Elastic properties of flux lattices in anisotropic high-Tc superconductors.
Elastic properties of flux lattices in anisotropic high-Tc superconductors.
复制标题
各向异性高温超导体中通量晶格的弹性特性。
DOI：
10.1103/physrevlett.62.1552
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发表时间：
1989
影响因子：
8.6
通讯作者：
Campbell Lj
中科院分区：
文献类型：
--
作者：
Kogan Vg;Campbell Lj
单轴超导体中二维磁通线晶格的弹性模量是针对中间场中晶体内涡流（即磁感应强度）的任意方向进行评估的。对于基础 a-b 平面中的通量线，简单剪切模量的比率（对应于法向和平行于基础平面的位移）显示为等于 (m 3/m 1) 2，其中 m 3 和 m 1 分别是沿 c 轴和基础平面的质量。对于YBa 2 Cu 3 O 7 来说，这相当于超过600的因子。单轴晶体对称性定义了通量晶格的优选取向并使独立弹性常数的数量加倍。
The elastic moduli of the two-dimensional flux-line lattice in a uniaxial superconductor are evaluated for an arbitrary orientation of vortices (ie, of the magnetic induction) within the crystal in intermediate fields. For the flux lines in the basal a-b plane the ratio of the simple shear moduli, corresponding to displacements normal and parallel to the basal plane, is shown to equal (m 3/m 1) 2 where m 3 and m 1 are the masses along the c axis and the basal plane, respectively. For YBa 2 Cu 3 O 7 this amounts to a factor exceeding 600. The uniaxial crystal symmetry defines a preferred orientation to the flux lattice and doubles the number of independent elastic constants.