The Gradient Expansion for the Free-Energy of a Clean Superconductor
classification
❄️ cond-mat.supr-con
keywords
cleanexpansiongradientordersuperconductordescribeenergyexplicit
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We describe a novel method for obtaining the gradient expansion for the free energy of a clean BCS superconductor. We present explicit results up to fourth order in the gradients of the order parameter.
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