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J. Phys. Soc. Jpn. 75, 074718 (2006) [9 Pages]
FULL PAPERS

Evolution in Split-Peak Structure across the Peak Effect Region in Single Crystals of 2H-NbSe2

+ Affiliations
1Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Mumbai 400005, India2Technical Physics and Prototype Engineering Division, Bhabha Atomic Research Center, Mumbai 400085, India3National Institute for Materials Science, Tsukuba, Ibaraki 305-00034Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08855, U.S.A.

We have investigated the presence of a two-peak feature spanning the peak effect (PE) region in the ac susceptibility data and magnetization hysteresis measurements over a wide field–temperature regime in few weakly pinned single crystals of 2 H -NbSe 2 , which display a reentrant characteristic in the PE curve near T c (0). We believe that the two-peak feature evolves into a distinct second magnetization peak (SMP) anomaly well separated from the PE with gradual enhancement in the quenched random pinning.

©2006 The Physical Society of Japan

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