Energy landscape and shear modulus of interlayer Josephson vortex systems

Abstract

The ground state of interlayer Josephson vortex systems is investigated on the basis of a simplified Lawrence-Doniach model in which spatial dependence of the gauge field and the amplitude of superconducting order parameter is not taken into account. Energy landscape is drawn with respect to the in-plane field, the period of insulating layers including Josephson vortices, and the shift from the aligned vortex lattice. The energy landscape has a multi-valley structure and ground-state configurations correspond to bifurcation points of the valleys. In the high-field region, the shear modulus becomes independent of field and its anisotropy dependence is given by $c_{66}\propto {\gamma }^{-4}$.

4 pages, 7 figures (2 gif figures not in the text); RevTeX

References in corpus (3)

• Josephson Vortex States in Intermediate Fields
• Density functional theory for freezing transition of vortex-line liquid with periodic layer pinning
• Transport properties and structures of vortex matter in layered superconductors

Cited by in corpus (4)

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• Electrodynamics of Josephson vortex lattice in high-temperature superconductors
• Coexisting multiple dynamic states generated by magnetic field in Bi-2212 stacked Josephson junctions