1998/12/31 by Yoshihiko Nonomura, Xiao Hu, Masashi Tachiki
Physics and Astronomy · #Condensed matter physics #Field (mathematics) #Flux (metallurgy) #Line (geometry) #Magnetic field #Magnetic flux #Materials science #Mechanism (biology) #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum and electron transport phenomena #Quantum entanglement #Quantum mechanics #Superconductivity #Theoretical and Computational Physics #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.59.r11657
10 pages, 5 Postscript figures, RevTeX; changed content and figures, Phys. Rev. B Rapid Commun. in press
arxiv created 1999/03/16 · openalex publication_date 1999/05/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The mechanism of the flux-line-lattice (FLL) melting in anisotropic high-Tc superconductors in B\ensuremath\Vertc^ is clarified by Monte Carlo simulations of the three-dimensional frustrated XY model. The percentage of entangled flux lines abruptly changes at the melting temperature Tm, while no sharp change can be found in the number and size distribution of vortex loops around Tm. Therefore, the origin of this melting transition is the entanglement of flux lines. Scaling behaviors of physical quantities are consistent with the above mechanism of the FLL melting. The Lindemann number is also evaluated without any phenomenological arguments.