dorsal/arxiv
View SchemaCoexistence of superconductivity and charge density wave in a correlated regime
| Authors | E. J. Calegari, L. C. Prauchner, A. C. Lausmann, S. G. Magalhaes |
|---|---|
| Categories | |
| ArXiv ID | 2601.06326vv1 |
| URL | https://arxiv.org/abs/2601.06326 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
To investigate the coexistence of superconductivity and charge density wave (CDW) in a correlated regime, we employ the Green's functions formalism, as well as the Hubbard-I approximation, as a way to introduce the correlations into the problem, in the form of a repulsive Coulomb interaction $U$. In addition, we investigate the effects of second-nearest neighbor hopping $t_1$ on a pure CDW state. The analysis of the results show that, for small values of $t_1$, both CDW and superconducting gaps compete for the same region on the Fermi surface. The increase of $t_1$ decreases the competition and may lead the system to a coexistence regime. Effects of temperature in the coexistence regime, are also investigated.
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"abstract": "To investigate the coexistence of superconductivity and charge density wave (CDW) in a correlated regime, we employ the Green\u0027s functions formalism, as well as the Hubbard-I approximation, as a way to introduce the correlations into the problem, in the form of a repulsive Coulomb interaction $U$. In addition, we investigate the effects of second-nearest neighbor hopping $t_1$ on a pure CDW state. The analysis of the results show that, for small values of $t_1$, both CDW and superconducting gaps compete for the same region on the Fermi surface. The increase of $t_1$ decreases the competition and may lead the system to a coexistence regime. Effects of temperature in the coexistence regime, are also investigated.",
"arxiv_id": "2601.06326",
"authors": [
"E. J. Calegari",
"L. C. Prauchner",
"A. C. Lausmann",
"S. G. Magalhaes"
],
"categories": [
"cond-mat.supr-con",
"cond-mat.str-el"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Coexistence of superconductivity and charge density wave in a correlated regime",
"url": "https://arxiv.org/abs/2601.06326",
"version": "v1"
},
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