Post Gaussian effective potential in the Ginzburg Landau theory of superconductivity
Institute of Physics and Applied Physics, Younsei University, Seoul, 120-749, Korea
Published online: 12 July 2004
The post Gaussian effective potential in D=3 dimensions and the Gaussian effective potential in are evaluated for the Ginzburg-Landau theory of superconductivity. It is shown that, the next order correction to the Gaussian approximation of the Ginzburg-Landau parameter κ is significant, whereas contribution from the two dimensionality is rather small. This strongly indicates that strong correlation plays a more dominant role than the two dimensionality does in high Tc superconductivity.
PACS: 74.40.+k – Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) / 11.15.Ex – Spontaneous breaking of gauge symmetries / 74.20.De – Phenomenological theories (two-fluid, Ginzburg-Landau, etc.) / 11.15.Tk – Other nonperturbative techniques
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004