Step change in equilibrium magnetization across the peak effect in 2H-NbSe2

Authors
Ravikumar, G Mishra, PK Sahni, VC Banerjee, SS Ramakrishnan, S Grover, AK Gammel, PL Bishop, DJ Bucher, E Higgins, MJ Bhattacharya, S
Citation
G. Ravikumar et al., Step change in equilibrium magnetization across the peak effect in 2H-NbSe2, PHYSICA C, 322(3-4), 1999, pp. 145-150
Citations number
34
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
322
Issue
3-4
Year of publication
1999
Pages
145 - 150
Database
ISI
SICI code
0921-4534(19990920)322:3-4<145:SCIEMA>2.0.ZU;2-4
Abstract
Isothermal magnetization measurements across the peak effect (PE) region in a clean superconducting crystal of 2H-NbSe2 reveal a step increase in the equilibrium magnetization suggestive of a first order phase transition. We relate this observation to the entropy change associated with the occurrenc e of order-disorder transformation across the PE in a weakly pinned flux li ne lattice (FLL). (C) 1999 Elsevier Science B.V. All rights reserved.