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arXiv · 1211.7363

Collective modes in singlet superconductors

Yafis Barlas·C. M. Varma
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Abstract

A brief summary of collective mode excitations that can exist in singlet superconductors with irreducible representation $L$ is given. Such excitations may be classified as the coupled excitations of the charge density $ρ$ and the phase $ϕ$ of the order parameter, or of the amplitude $Δ$ of order parameter. Each of these classes may be further characterized in the long wavelength limit by the irreducible representation $\ell$ of the excitation, which may or may not be the same as the ground state $L$.

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Yafis Barlas, C. M. Varma. 2012-11-30. Collective modes in singlet superconductors. https://arxiv.org/abs/1211.7363

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