Superconducting critical temperature, for s-wave symmetry order parameter, for intermediate correlated electron systems

2001 ◽  
Vol 350 (1-2) ◽  
pp. 88-96 ◽  
Author(s):  
J.J. Rodrı́guez-Núñez ◽  
A.A. Schmidt
Keyword(s):  
Critical Temperature ◽  
Order Parameter ◽  
Electron Systems ◽  
S Wave ◽  
Correlated Electron Systems ◽  
Correlated Electron ◽  
Wave Symmetry

scholarly journals Theory of superconductivity in strongly correlated electron systems

2018 ◽  
Vol 32 (23) ◽  
pp. 1850257 ◽  
Author(s):  
Chyh-Hong Chern
Keyword(s):  
Energy Gap ◽  
Electron System ◽  
Real Space ◽  
Pairing Symmetry ◽  
Attractive Potential ◽  
S Wave ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Correlated Electron ◽  
Wave Symmetry

In the correlated electron system with the pseudogap, full-gapped domains and Fermi-arced domains coexist. These domains are created by the quantum-fluctuated antiferromagnetic correlation that generates the short-ranged attractive potential to produce the Fermi arcs and the superconductivity. In the full-gapped domains, s-wave or [Formula: see text]-wave symmetry of the electron pairs is favored. In the Fermi-arced domains, only [Formula: see text]-wave symmetry of pairs is stable. Superconductivity of different pairing symmetry coexists in different domains as well. Different from the Cooper pairs, the correlated electrons pair up in the real space with an energy gap. Gapless states, on the contrary, hinder the development of superconductivity.

EXACTNESS OF FERMIONIC LINEARIZATION SCHEME WITH CLIFFORD VARIABLES IN d=∞

1995 ◽  
Vol 09 (16) ◽  
pp. 971-975 ◽  
Author(s):  
ARIANNA MONTORSI
Keyword(s):  
Exact Solution ◽  
Single Site ◽  
Strongly Correlated Electron Systems ◽  
Strongly Correlated ◽  
Electron Systems ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Correlated Electron

We show that the fermionic linearization scheme for dealing with strongly correlated electron systems — when implemented with Clifford variables — becomes exact in the d=∞ limit, at least for Hubbard-like models. In this case, the model is mapped exactly into a single-site problem. The conditions under which such a feature allows to obtain an exact solution are also discussed.

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