VORTEX LATTICE OF HIGHLY ANISOTROPIC LAYERED SUPERCONDUCTORS IN STRONG, PARALLEL MAGNETIC-FIELDS
VORTEX LATTICE OF HIGHLY ANISOTROPIC LAYERED SUPERCONDUCTORS IN STRONG, PARALLEL MAGNETIC-FIELDS
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DOI：
10.1103/physrevb.44.10234
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发表时间：
1991-11-01
影响因子：
3.7
通讯作者：
CLEM, JR
中科院分区：
文献类型：
--
作者：
BULAEVSKII, L;CLEM, JR
利用在Lawrence-Doniach模型框架下得到的标准不变相方程，研究了强平行磁场H下层状超导体中的涡旋晶格。随着H的变化，不同周期的晶格之间发生一系列一阶相变。在H0 = phi-0/gamma-s2(其中phi-0是通量量子，s是层间距，gamma是各向异性（gamma = λ -c/ λ -ab，其中λ -c和λ -ab分别是垂直于层和平行于层的电流的穿透深度）处，发生了H（cl）阶的最大磁化跳变。高场磁化强度M与H（-3）的渐近关系为M与H（-3）成正比。
The equations for the gauge-invariant phases obtained in the framework of the Lawrence-Doniach model are used to study the vortex lattice in layered superconductors in strong, parallel magnetic fields H. As H changes, a sequence of first-order phase transitions occurs between the lattices with different periods. The largest jumps in magnetization, of order H(cl), occur at fields of order H0 = phi-0/gamma-s2, where phi-0 is the flux quantum, s is the interlayer spacing, and gamma is the anisotropy (gamma = lambda-c/lambda-ab, where lambda-c and lambda-ab are the penetration depths for currents perpendicular and parallel to the layers, respectively). The asymptotic dependence of the magnetization M at high fields H >> H0 is M is-proportional-to H(-3).