5 papers
Disordered Type-II Superconductors: A Universal Phase Diagram for Low-T Systems
S. S. Banerjee, A. K. Grover, M. J. Higgins +9
A universal phase diagram for weakly pinned low-T type-II superconductors is revisited and extended with new proposals. The low-temperature ``Bragg glass'' phase is argued to t…
Stable and Metastable vortex states and the first order transition across the peak effect region in weakly pinned 2H-NbSe_2
G. Ravikumar, V. C. Sahni, A. K. Grover +6
The peak effect in weakly pinned superconductors is accompanied by metastable vortex states. Each metastable vortex configuration is characterized by a different critical current d…
Peak Effect in CaRhSn : Vortex Phase Diagram and Evidences for Stepwise Amorphization of Flux Line Lattice
S. Sarkar, D. Pal, S. S. Banerjee +9
The Peak Effect (PE) regime in a single crystal of CaRhSn has been investigated in detail via ac susceptibility as well as dc magnetization measurements. The PE regi…
A study of supercooling of the disordered vortex phase via minor hysteresis loops in 2H-NbSe_2
G. Ravikumar
We report on the observation of novel features in the minor hysteresis loops in a clean crystal of NbSe_2 which displays a peak effect. The observed behavior can be explained in te…
Anomalous Peak Effect in CeRu2 and NbSe2 : Fracturing of a Flux Line Lattice?
S. S. Banerjee
CeRu2 and 2H-NbSe2 display remarkable similarities in their magnetic response, reflecting the manner in which the weakly pinned flux line lattice (FLL) loses spatial order in the P…