scholarly journals Z4to U(1) crossover of the order-parameter symmetry in a two-dimensional valence-bond solid

2009 ◽  
Vol 80 (21) ◽  
Author(s):  
Jie Lou ◽  
Anders W. Sandvik
Keyword(s):  
Order Parameter ◽  
Valence Bond ◽  
Two Dimensional ◽  
Valence Bond Solid ◽  
Parameter Symmetry ◽  
Order Parameter Symmetry

Example of how an unconventional order parameter symmetry may open new perspectives in the design of HTS Josephson junctions

2002 ◽  
Author(s):  
Francesco Tafuri ◽  
Filomena Lombardi ◽  
F. M. Granozio ◽  
F. Carillo ◽  
Fabrizio Riccia ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Order Parameter ◽  
Parameter Symmetry ◽  
Order Parameter Symmetry

Anisotropic Order Parameter in Two-Band Superconductivity

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3099-3101 ◽  
Author(s):  
P. Konsin ◽  
N. Kristoffel ◽  
P. Rubin
Keyword(s):  
Order Parameter ◽  
Equation System ◽  
Order Parameters ◽  
Band Model ◽  
Gap Equation ◽  
Narrow Region ◽  
Interband Scattering ◽  
Parameter Symmetry ◽  
Order Parameter Symmetry

A two-overlapping band model of superconductivity with s+d interband scattering is investigated. The gap equation system has been solved numerically. Solutions of pure-d and -s, or of mixed s+d nature are possible. The pure Tcd(μ) or Tcs(μ) curves determine the onset of superconductivity with temperature lowering. In the under- and over-doped region pure-symmetry orderings are preferred. Mixed ordering can exist in a narrow region of μ, becoming narrower with T rising. The peculiarities of the and spectra are reflected in the behaviour of the order parameters. Order parameter symmetry can change with T and μ.

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