Study of minor hysteresis loops in the usual and anomalous superconducting regime of (Ce0.95Nd0.05)Ru2: evidence of a First-order transition

Roy, S. B. ; Chaddah, P. (1997) Study of minor hysteresis loops in the usual and anomalous superconducting regime of (Ce0.95Nd0.05)Ru2: evidence of a First-order transition Physica C: Superconductivity, 279 (1-2). pp. 70-78. ISSN 0921-4534

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0921-4534(97)00104-4

Abstract

We present a detailed study of minor hysteresis loops (MHLs) in the usual and anomalous superconducting (SC) regime of (Ce0.95Nd0.05)Ru2. MHLs in the usual SC regime follow the predictions of critical state models (CSM) for a hard type-II SC with field-dependent critical current (Jc). At the onset of the anomalous SC regime, the behaviour of the MHLs cannot be explained by CSM alone. Our results present strong evidence of a first-order transition from the usual to the anomalous SC phase. MHLs are used to track the growth of the domains or nuclei of the anomalous SC phase across this first-order transition. Well inside the anomalous regime where the first-order transition is complete, MHLs are again as expected from CSM and this behaviour persists until one reaches the reversible regime below Hc2, indicating that the upper transition is of second order.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:84620
Deposited On:27 Feb 2012 12:32
Last Modified:27 Feb 2012 12:32

Repository Staff Only: item control page