Universal phase diagram for vortex states of layered superconductors in strong magnetic fields
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306 (United States)
- Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)
We report on a Monte Carlo study of the lowest-Landau-level limit of the Lawrence-Doniach model for a layered superconductor. We have studied order parameter correlation functions for indications of the broken translational symmetry and the off-diagonal long-range order present in the mean-field-theory vortex lattice. Our results are consistent with a single first-order phase transition between a low-temperature three-dimensional vortex solid phase, with both broken translational symmetry and off-diagonal long-range order, and a high-temperature vortex liquid phase with no broken symmetries. We construct a universal phase diagram in terms of dimensionless parameters characterizing intralayer and interlayer couplings. The universal phase boundary extracted from our simulations and the associated latent heats and magnetization jumps are compared with experiment and with numerical results obtained for related models. {copyright} {ital 1997} {ital The American Physical Society}
- Research Organization:
- Purdue Research Foundation
- DOE Contract Number:
- FG02-90ER45427
- OSTI ID:
- 548795
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 5 Vol. 56; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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