Evidence of a first order like jump in equilibrium magnetization across the peak effect region in superconducting 2H-NbSe$_2$

G. Ravikumar et al

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arXiv · cond-mat/9810204

Evidence of a first order like jump in equilibrium magnetization across the peak effect region in superconducting 2H-NbSe$_2$

G. Ravikumar et al

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Abstract

We report magnetization hysteresis measurements in the peak effect region of a very clean single crystal of superconducting 2H-NbSe$_2$ at temperatures very close to T$_c$(0). Through measurement of minor magnetization curves, we infer the equilibrium magnetization curve across the PE region. We observe a small first order like change in equilibrium magnetization across the peak effect. We relate this observation to the entropy change associated with the order-disorder transformation. We further note that the first order like change in the equilibrium magnetization observed in 2H-NbSe$_2$ is comparable to the change(s)observed in the equilibrium magnetization at the FLL melting transition in various high temperature superconductors.

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G. Ravikumar et al. 1998-10-16. Evidence of a first order like jump in equilibrium magnetization across the peak effect region in superconducting 2H-NbSe$_2$. https://arxiv.org/abs/cond-mat/9810204

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