Specific heat of classical disordered elastic systems

Details Specific heat of classical disordered elastic systems Specific heat of classical disordered elastic systems

2003-01-06

arxiv.org/abs/cond-mat/0301053v3

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 $d=3$.

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