Understanding cuprate superconductors with spontaneous nodal gap generation
| dc.creator | Liu, Guo-Zhu | |
| dc.creator | Cheng, Geng | |
| dc.date | 2004-04-13 | |
| dc.date.accessioned | 2026-07-07T02:57:35Z | |
| dc.date.available | 2026-07-07T02:57:35Z | |
| dc.description | We study the spontaneous gap generation for gapless nodal fermions within an effective gauge field theory of high temperature superconductors. When superconductivity appears, the gauge boson acquires a finite mass via Anderson-Higgs mechanism. Spontaneous nodal gap generation takes place if the gauge boson mass $ξ$ is zero or less than a critical value $ξ_{c}$ but is suppressed by a larger gauge boson mass. The generated nodal gap prohibits the appearance of low-energy fermion excitations and leads to antiferromagnetic order. Using the fact that gauge boson mass $ξ$ is proportional to superfluid density and doping concentration, we build one mechanism that provides a unified understanding of the finite single particle gap along the nodal direction in lightly doped cuprates, the competition and coexistence of antiferromagnetism and superconductivity, and the thermal metal-to-insulator transition from the superconducting state to the field-induced normal state in underdoped cuprates. | |
| dc.description | 10 pages, no figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0404300 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0404300 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/23727 | |
| dc.subject | Superconductivity | |
| dc.title | Understanding cuprate superconductors with spontaneous nodal gap generation | |
| dc.type | text |