PMID: 11328103May 1, 2001Paper

Simulation of flux lines with columnar pins: bose glass and entangled liquids

Physical Review Letters
P SenD Ceperley

Abstract

Using path integral Monte Carlo we simulate a 3D system of up to 1000 magnetic flux lines by mapping it onto interacting bosons in (2+1)D. With increasing temperatures we find first order melting from an ordered solid to an entangled liquid signaled by a finite entropy jump and sharp discontinuities of the defect density and the structure factor S(G). For a particular density of strong columnar pins the crystal is transformed into a Bose glass phase with patches of crystalline order disrupted by the trapped vortices at the pinning sites but with no overall positional or orientational order. This glassy phase melts into a defected entangled liquid through a continuous transition.

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Citations

Oct 4, 2003·Physical Review Letters·Chandan Dasgupta, Oriol T Valls
Mar 14, 2003·Physical Review Letters·S S BanerjeeT Tamegai

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