Criterion for Vestigial Order above a Nematic Superconductor

P. T. How; S. K. Yip

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arXiv · 2207.04714

Criterion for Vestigial Order above a Nematic Superconductor

P. T. How·S. K. Yip

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Abstract

A nematic superconductor can in principle support a vestigial order phase above its superconducting transition temperature, with rotational symmetry spontaneously broken while remain nonsuperconducting. We examine the condition for this vestigial nematic order to occur, within a Ginzburg-Landau theory with order parameter fluctuations included. Contrary to prior theoretical results, we found that this vestigial order actually requires very stringent conditions to be met: the material must be sufficiently deep in the nematic regime (i.e. far away from the boundary separating the nematic and chiral superconducting phases) to possibly exhibit a vestigial nematic order.

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P. T. How, S. K. Yip. 2022-07-11. Criterion for Vestigial Order above a Nematic Superconductor. https://arxiv.org/abs/2207.04714

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