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Low temperature thermodynamics of charged bosons in a random potential and the specific heat of La2−xSrxCuO4 below Tc.

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posted on 2006-04-04, 12:24 authored by A.S. Alexandrov, Richard Giles
We propose a simple analytical form of the partition function for charged bosons localised in a random potential and derive the consequent thermodynamics below the superfluid transition temperature. In the low temperature limit, the specific heat C depends on the localisation length exponent ν: C is linear for ν ≤ 1, but for ν > 1 we obtain C ∝ T1/ . This unusual sub-linear temperature dependence of the specific heat has recently been observed in La2−xSrxCuO4 below Tc.

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School

  • Science

Department

  • Physics

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242374 bytes

Publication date

2006

Notes

This is a pre-print. It is also available at: http://arxiv.org/abs/cond-mat/9712029.

Language

  • en

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