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3D XY and lowest Landau level fluctuations in deoxygenated YBCO thin films by Moloni, K.; Friesen, M.; Li, Shi; Souw, V.; Metcalf, P.; Hou, L.; McElfresh, M. is a scholarly article available to read on EtoBox.

What is 3D XY and lowest Landau level fluctuations in deoxygenated YBCO thin films about?

Conductivity measurements reflect vortex solid melting in YBCO films. Field-independent glass exponents nu_g=1.9 and z_g=4.0 describe the transition T_g(H) for 0<H<26 T. At low fields, 3D XY exponents nu_{XY}=0.63 and z_{XY}=1.25 are also observed, with z_{XY} smaller than expected. These compete with glass scaling according to multicritical theory. A predicted power-law form of T_g(H) is observed for 0.5T_c<T_g<T_c. For T_g<0.5T_c, 3D XY scaling fails, but a lowest Landau level analysis becomes possible, obtaining T_{c2}(H) with positive curvature.

Author

Moloni, K.; Friesen, M.; Li, Shi; Souw, V.; Metcalf, P.; Hou, L.; McElfresh, M.

Published

1997

Language

EN