Superconducting gap ratio from strange metal phase in the absence of quasiparticles

Autor:	Cai, Wenhe, Ge, Xian-Hui
Rok vydání:	2018
Předmět:	Condensed Matter - Strongly Correlated Electrons General Relativity and Quantum Cosmology High Energy Physics - Theory
Zdroj:	2021 Commun. Theor. Phys. 73 025701
Druh dokumentu:	Working Paper
DOI:	10.1088/1572-9494/abd0e9
Popis:	A lattice model for strongly interacting electrons motivated by a rank-3 tensor model provides a tool for understanding the pairing mechanism of high-temperature superconductivity. This SYK-like model describes the strange metal phase in the cuprate high temperature superconductors. Our calculation indicates that the superconducting gap ratio in this model is higher than the ratio in the BCS theory due to the coupling term and the spin operator. Under certain conditions, the ratio also agrees with the BCS theory. Our results relate to the case of strong coupling, so it may pave the way to gaining insight into the cuprate high temperature superconductors. Comment: 17 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1809.01846 Zobrazit plný text záznamu View this record from Arxiv