scholarly journals Excitation spectrum and critical exponents of a one-dimensional integrable model of fermions with correlated hopping

1993 ◽  
Vol 26 (19) ◽  
pp. 4863-4873 ◽  
Author(s):  
R Z Bariev ◽  
A Klumper ◽  
A Schadschneider ◽  
J Zittartz
Keyword(s):  
Excitation Spectrum ◽  
Critical Exponents ◽  
Integrable Model ◽  
One Dimensional

THE ROLE OF QUASI-ONE-DIMENSIONAL STRUCTURES IN HIGH-Tc SUPERCONDUCTIVITY

1989 ◽  
Vol 03 (03) ◽  
pp. 427-439 ◽  
Author(s):  
N. M. BOGOLIUBOV ◽  
V. E. KOREPIN
Keyword(s):  
Critical Temperature ◽  
Critical Exponents ◽  
Electron Tunneling ◽  
Dimensional System ◽  
Cooper Pairs ◽  
High Tc ◽  
Mean Values ◽  
One Dimensional ◽  
The One

The critical exponents describing the decrease of correlation functions on long distances for the one-dimensional Hubbard model is obtained. The behaviour of correlators shows that Cooper pairs of electrons are formed. The electron tunneling between the chains leads to the existence of the anomalous mean values and to the superconductive current. The anisotropy of the quasi-one-dimensional system leads to the rise of critical temperature T c .

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