Sound Velocity and Meissner Effect in Light-heavy Fermion Pairing Systems
Superconductivity
2016-08-31 v3 Other Condensed Matter
High Energy Physics - Phenomenology
Nuclear Theory
Atomic Physics
Quantum Physics
Abstract
In the frame of a four fermion interaction theory, we investigated the collective excitation in light-heavy fermion pairing systems. When the two species of fermions posses different masses and chemical potentials but keep the same Fermi surface, we found that the sound velocity in superfluids and the Meissner mass or inverse penetration depth in superconductors have the same mass ratio dependence as the ratio of the transition temperature to the zero temperature gap.
Keywords
Cite
@article{arxiv.cond-mat/0603683,
title = {Sound Velocity and Meissner Effect in Light-heavy Fermion Pairing Systems},
author = {Lianyi He and Meng Jin and Pengfei Zhuang},
journal= {arXiv preprint arXiv:cond-mat/0603683},
year = {2016}
}
Comments
4 pages, 2 figures, accepted for publication in PRB as a Rapid Communication