Flux-line entanglement as the mechanism of FLL-melting transition in anisotropic HTSC
Journal Article
·
· Journal of Low Temperature Physics
The mechanism of the flux-line-lattice (FLL) melting in anisotropic high-{Tc} superconductors in B {parallel} {cflx c} is clarified by Monte Carlo simulations of the 3D frustrated XY model. The percentage of entangled flux lines abruptly changes at the melting temperature T{sub m}, while no sharp change can be found in the number and size distribution of vortex loops around T{sub m}. Therefore, the origin of this melting transition is the entanglement of flux lines. Scaling behaviors of the melting temperature T{sub m} are consistent with this one-dimensional character of the entanglement mechanism of the FLL melting. That is, T{sub m} does not depend on the system size in the ab plane, while it is scaled by the system size along the c axis, L{sub c}, as T{sub m}(L{sub c}) {minus} T{sub m}({infinity}) {proportional{underscore}to} L{sub c}{sup {minus}d}, d = 1.
- Research Organization:
- National Research Inst. for Metals, Tsukuba, Ibaraki (JP)
- OSTI ID:
- 20015334
- Journal Information:
- Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 5-6 Vol. 117; ISSN JLTPAC; ISSN 0022-2291
- Country of Publication:
- United States
- Language:
- English
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