# name
Low-temperature quantum relaxation of single two-dimensional vortices in an epitaxial Tl2Ba2Ca2Cu3Ox thin film

# metadata.dc.description.abstract[].value
Time-logarithmic magnetic-relaxation measurements have been obtained in an epitaxial 
Tl
2
Ba
2
Ca
2
Cu
3
O
x
 thin film for the zero-field cooled and remanent magnetization, with low and moderate applied magnetic fields. With low fields (
H
a
=50 Oe), the normalized magnetic relaxation rates, S≡‖d(M/
M
i
)/d lnt‖, are temperature independent below T≃3.4 K, and the transition from the thermal to the quantum regime appears to be quite sharp. With moderate fields (
H
a
=500 Oe), the transition becomes smooth and takes place at temperatures higher than with low fields, T≃7 K. This seems to indicate that the mechanism responsible for low-temperature relaxation would be nondissipative Hall tunneling of two-dimensional vortices, rather than dissipative vortex motion.

# metadata.dc.relation.isformatof[].value
Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.50.9439

# metadata.dc.source[].value
Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.title[].value
Low-temperature quantum relaxation of single two-dimensional vortices in an epitaxial Tl2Ba2Ca2Cu3Ox thin film