Scaling behaviours of vortex transport in 2H-Nb0.9Ta0.1Se2

Citation
B. Zhang et al., Scaling behaviours of vortex transport in 2H-Nb0.9Ta0.1Se2, ACT PHY C E, 50(11), 2001, pp. 2221-2225
Citations number
12
Language
CHINESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA SINICA
ISSN journal
1000-3290 → ACNP
Volume
50
Issue
11
Year of publication
2001
Pages
2221 - 2225
Database
ISI
SICI code
1000-3290(200111)50:11<2221:SBOVTI>2.0.ZU;2-G
Abstract
The field dependence of voltage V(H) in a 2H-Nb0.9Ta0.1Se2 single crystal a t various currents was measured and converted to current-voltage data V(I). Then the scaling law V = alpha (I- I-c)(beta) was applied to extract the c ritical current I-c(H) and differential resistance R-d( H). The results sho w a peak on the differential resistance vs. H curve near H-c2 when the appl ied current is high, but for a lower current it appears near the onset of p eak effect region. This indicates that the new types of pinning centers gen erated by doped Ta. significantly alter the dynamic properties of the vorte x system.