Superconducting phase diagram of a narrow-band system atT=0: A mean-field study

1993 ◽  
Vol 48 (22) ◽  
pp. 16673-16679 ◽  
Author(s):  
A. N. Das ◽  
Sujit Sarkar ◽  
P. Choudhury
Keyword(s):  
Phase Diagram ◽  
Field Study ◽  
Narrow Band ◽  
Band System ◽  
Mean Field ◽  
Superconducting Phase

Superconductivity in a narrow-band system with intersite electron pairing in two dimensions: A mean-field study

1988 ◽  
Vol 37 (16) ◽  
pp. 9410-9422 ◽  
Author(s):  
R. Micnas ◽  
J. Ranninger ◽  
S. Robaszkiewicz ◽  
S. Tabor
Keyword(s):  
Field Study ◽  
Narrow Band ◽  
Band System ◽  
Mean Field ◽  
Two Dimensions ◽  
Electron Pairing

scholarly journals Phase Diagram of Coupled Glassy Systems: A Mean-Field Study

1997 ◽  
Vol 79 (13) ◽  
pp. 2486-2489 ◽  
Author(s):  
Silvio Franz ◽  
Giorgio Parisi
Keyword(s):  
Phase Diagram ◽  
Field Study ◽  
Mean Field ◽  
Glassy Systems

PHASE DIAGRAM OF UNCONVENTIONAL SUPERCONDUCTORS ON TRIANGULAR LATTICES

2005 ◽  
Vol 19 (01n03) ◽  
pp. 119-121 ◽  
Author(s):  
HONG-WEI CHEN ◽  
QIANG HAN ◽  
Z. D. WANG
Keyword(s):  
Phase Diagram ◽  
Phase Transitions ◽  
Triangular Lattice ◽  
Mean Field ◽  
Superconducting Phase ◽  
Two Dimensional ◽  
Unconventional Superconductors ◽  
Pairing Symmetries ◽  
F Wave ◽  
The Mean

The superconducting system in the two dimensional triangular lattice is investigated by the mean-field treatment of a simple effective model. We calculate the phase diagram of this kind of superconductor for various pairing symmetries and interactions as well as electron occupancies. It is found that the px+ipy-, d+id′-, and f- wave superconducting states are stabilized in different doping regions, and there exist superconducting phase transitions by varying the carrier concentration in the system. The relevance of our results to the recently discovered superconductor, Na x CoO 2·y H 2 O , is briefly discussed.

scholarly journals A beyond mean-field study of the Tavis-Cummings model

2019 ◽  
Author(s):  
C. Tejera-Centeno ◽  
P. Pérez-Fernández ◽  
J. M. Arias
Keyword(s):  
Field Study ◽  
Mean Field

scholarly journals Superconducting phase diagram and nontrivial band topology of structurally modulated Sn1−xSbx

2019 ◽  
Vol 3 (8) ◽  
Author(s):  
Bin Liu ◽  
Chengcheng Xiao ◽  
Qinqing Zhu ◽  
Jifeng Wu ◽  
Yanwei Cui ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Superconducting Phase

scholarly journals Collective Modes in Excitonic Magnets: Dynamical Mean-Field Study

2019 ◽  
Vol 122 (12) ◽  
Author(s):  
D. Geffroy ◽  
J. Kaufmann ◽  
A. Hariki ◽  
P. Gunacker ◽  
A. Hausoel ◽  
...  
Keyword(s):  
Field Study ◽  
Mean Field ◽  
Collective Modes

scholarly journals SUPERCONDUCTING PHASE TRANSITION IN THE NAMBU–JONA-LASINIO MODEL

2001 ◽  
Vol 16 (17) ◽  
pp. 1129-1138 ◽  
Author(s):  
M. SADZIKOWSKI
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Phase Transitions ◽  
Superconducting Phase ◽  
Coupling Constants ◽  
Coupling Constant ◽  
Rich Phase ◽  
Quark Interaction ◽  
Quark Coupling ◽  
Superconducting Phase Transition

The Nambu–Bogoliubov–de Gennes method is applied to the problem of superconducting QCD. The effective quark–quark interaction is described within the framework of the Nambu–Jona-Lasinio model. The details of the phase diagram are given as a function of the strength of the quark–quark coupling constant G′. It is found that there is no superconducting phase transition when one uses the relation between the coupling constants G′ and G of the Nambu–Jona-Lasinio model which follows from the Fierz transformation. However, for other values of G′ one can find a rich phase structure containing both the chiral and the superconducting phase transitions.

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