Volume 48, Number 6, December 1999
|Page(s)||679 - 685|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Pure 2D vortex-glass phase transition with in deoxygenated thin films
Departamento de Física Aplicada III, Universidad Complutense de Madrid, 28040, Madrid, Spain
2 Departamento de Física, Universidad Carlos III de Madrid, Leganés 28911, Madrid, Spain
3 Departamento de Física Aplicada, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
Accepted: 19 October 1999
Non-linear I-V characteristics have been measured on high-quality deoxygenated thin films, in magnetic fields up to . Critical scaling analysis of the current-voltage data demonstrates the existence of a pure two-dimensional vortex-glass transition with for high magnetic fields (7, ). The validity of the pure 2D vortex-glass model in our samples is checked with the linear resistivity term and the non-linear current density. The linear resistivity from resistivity vs. temperature and current-voltage measurements, produces the parameters p for , for ) and T0 (230 K) used for the scaling analysis. The non-linear current density jnl exhibits a power law temperature dependence suggesting as predicted by the 2D vortex-glass theory. The values of the exponent p obtained in this study are in good agreement with the predictions of the quantum theory of vortex tunneling.
PACS: 74.60.Ge – Flux pinning, flux creep, and flux-line lattice dynamics / 74.60.Jg – Critical currents / 74.72.Fq – Tl-based cuprates
© EDP Sciences, 1999
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.