Monte Carlo simulation of two-dimensional flux-line-lattice melting

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.7383· OSTI ID:6274083

Kato, Y; Nagaosa, N ^[1]

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1. Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113 (Japan)

A Monte Carlo simulation of a two-dimensional flux-line-lattice (FLL) melting transition is presented. The internal energy, specific heat, Abrikosov ratio, and diffraction pattern of the magnitude [vert bar][psi]([ital x])[vert bar][sup 2] of the order-parameter field are calculated. By examining in detail the hysteresis, histogram, and relaxation profiles of the internal energy, the existence of a first-order phase transition is concluded. Below the transition temperature [ital t][sub [ital m]] the diffraction pattern has six sharp peaks corresponding to the hexagonal symmetry of the triangular FLL, while it shows liquidlike behavior above [ital t][sub [ital m]]. The sample-size dependence of the peak height clearly shows that the phase transition is the melting of the FLL. Comparison with earlier works is also made.

• OSTI ID: 6274083
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:10; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CALCULATION METHODS
COHERENT SCATTERING
COMPUTERIZED SIMULATION
DIFFRACTION
ENERGY
MONTE CARLO METHOD
ORDER PARAMETERS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SCATTERING
SIMULATION
SPECIFIC HEAT
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TWO-DIMENSIONAL CALCULATIONS
TYPE-II SUPERCONDUCTORS