Physics – Condensed Matter
Scientific paper
2003-01-06
Phys. Rev. Lett. 91, 117002 (2003)
Physics
Condensed Matter
4 pages, RevTex
Scientific paper
10.1103/PhysRevLett.91.117002
We study the thermodynamics of disordered elastic systems, applied to vortex lattices in the Bragg glass phase. Using the replica variational method we compute the specific heat of pinned vortons in the classical limit. We find that the contribution of disorder is positive, linear at low temperature, and exhibits a maximum. It is found to be important compared to other contributions, e.g. core electrons, mean field and non linear elasticity that we evaluate. The contribution of droplets is subdominant at weak disorder in $d=3$.
Doussal Pierre Le
Giamarchi Thierry
Schehr Gregory
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