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Quantum tunneling of vortices in an epitaxial T1-based thin-film

✍ Scribed by A. García; X.X. Zhang; J. Tejeda; M. Manzel; H. Bruchlos

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
175 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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✦ Synopsis

The vortex dynamics in a highly c-axis oriented epitaxial Tl,Ba$$Cu,O, (Tl-2223) thin-film has been investigated via time-relaxation of the zero-field cooled and remanent magnetization, for low (50 Qe) and moderate (500 Oe) applied magnetic fields below 15 K. A T-independent plateau has been found and explained in terms of quantum tunneling of 2D vortices in the CuO, planes. The influence of the field on the transition has been studied. A T2dependence has been found, this being an evidence of strong ohmic dissipation.

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