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Paper   IPM / Physic / 6720
School of Physics
  Title:   Vortex Phase Diagram and Two-Dimensional Bosons
1.  B. Davoudi
2.  M. Kohandel
  Status:   Published
  Journal: Phys. Rev. B
  No.:  48
  Vol.:  61
  Year:  2000
  Pages:   14727-14732
  Supported by:  IPM
We study the phase diagram of the flux lines using the mapping to two-dimensional bosons interacting via the Yukawa potential in the hypernetted-chain approximation. The pair-correlation function, static structure factor, and spectrum of the excited energies are calculated over a wide range of the parameter. These quantities are used for studying the freezing transition from the entangled vortex liquid into the Abrikosov lattice. The resulting B-T phase diagram is in good agreement with the known estimates for the vortex lattice phase diagram and the Monte Carlo simulations.

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