scholarly journals Order-parameter fluctuation effects ind-wave BCS superconductors

1999 ◽  
Vol 59 (21) ◽  
pp. 13600-13603 ◽  
Author(s):  
Hyok-Jon Kwon
Keyword(s):  
Order Parameter ◽  
Parameter Fluctuation ◽  
Fluctuation Effects ◽  
Bcs Superconductors

scholarly journals Order parameter fluctuation and ordering competition in Ba1−xKxFe2As2

2017 ◽  
Vol 95 (2) ◽  
Author(s):  
Jing Wang ◽  
Guo-Zhu Liu ◽  
Dmitry V. Efremov ◽  
Jeroen van den Brink
Keyword(s):  
Order Parameter ◽  
Parameter Fluctuation

HEAT CAPACITY OF YBa2Cu3O7−δ NEAR Tc

1989 ◽  
Vol 03 (02) ◽  
pp. 111-114 ◽  
Author(s):  
S.E. INDERHEES ◽  
M.B. SALAMON
Keyword(s):  
Magnetic Field ◽  
Heat Capacity ◽  
Applied Magnetic Field ◽  
Order Parameter ◽  
High Temperature Superconductor ◽  
Thermal Fluctuations ◽  
Zero Field ◽  
Ginzburg Landau ◽  
Fluctuation Effects ◽  
Heat Capacity Measurements

The exceptionally short Ginzburg-Landau coherence length of the high temperature superconductor YBa 2 Cu 3 O 7−δ makes possible the observation of fluctuation effects near the transition from the normal to the superconducting state. At the time of this writing, observations of fluctuation contributions to the electrical conductivity,1 magnetic susceptibility2 and thermopower3 have been reported. Excess contributions to the heat capacity (C fl ) due to thermal fluctuations, though far more difficult to observe, have been noted by several researchers.4 The heat capacity measurements are of particular interest, as a comparison of C fl above and below T c may elucidate the number of components of the Ginzburg-Landau (GL) order parameter and hence the nature of the pairing. The behavior of the heat capacity in an applied magnetic field is distinctly different from that of an ordinary superconductor.5 We summarize here our results on heat capacity measurements in zero field and in an applied magnetic field.

Sign in / Sign up

Export Citation Format

Share Document