UNIGE document Scientific Article
previous document  unige:92774  next document
add to browser collection
Title

Possible entanglement of the vortices in DyBa2Cu3O7-(Y1−xPrx)Ba2Cu3O7 coupled hetero-structures

Authors
Published in Physica C: Superconductivity and Its Applications. 1994, vol. 235-240, p. 2599-2600
Abstract Thermally activated flux motion is studied in proximity coupled multilayers, containing a number N of 24Å thick DyBa2Cu3O7 layers separated by 96Å (or more) of (Y1−xPrx)Ba2Cu3O7 alloy (x=0.4, x=0.55). In contrast to ultra-thin decoupled layers, for which we find that the activation energy for flux motion U≈logB (Hc), coupled samples show a cross-over to a power law behaviour U≈B−0.5 at a magnetic field H∗. This characteristic field depends on the anisotropy and decreases as N increases, a behaviour which can be understood in terms of the entanglement of the vortices, resulting in a relative increase of U due to the flux line crossing energy.
Identifiers
Full text
Structures
Citation
(ISO format)
FIVAT, Patrice Claude et al. Possible entanglement of the vortices in DyBa2Cu3O7-(Y1−xPrx)Ba2Cu3O7 coupled hetero-structures. In: Physica C: Superconductivity and Its Applications, 1994, vol. 235-240, p. 2599-2600. https://archive-ouverte.unige.ch/unige:92774

20 hits

0 download

Update

Deposited on : 2017-03-22

Export document
Format :
Citation style :