Temperature dependence of magnetization in the superconducting mixed state of CeRu2: evidence of a First order phase transition

Roy, S. B. ; Chattopadhyay, M. K. ; Chaddah, P. (2006) Temperature dependence of magnetization in the superconducting mixed state of CeRu2: evidence of a First order phase transition Journal of Physics: Condensed Matter, 18 (41). pp. 9471-9482. ISSN 0953-8984

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Official URL: http://iopscience.iop.org/0953-8984/18/41/014

Related URL: http://dx.doi.org/10.1088/0953-8984/18/41/014

Abstract

We present results of magnetization measurements in very close temperature intervals in the superconducting mixed state of CeRu2. While the temperature (T) dependence of magnetization in low applied magnetic fields (H) is typical of that of a type-II superconductor with moderate pinning, the character changes markedly in high applied H, showing clear evidence of a first-order phase transition. Isothermal field-dependent magnetization studies have suggested earlier the possibility of such a first-order phase transition in the low-T high-H part of the superconducting mixed state of CeRu2. The present results for the first time provide the evidence of this first-order phase transition in a temperature-dependent study of magnetization. The possible role of paramagnetic impurities in the observed phase transition is discussed.

Item Type:Article
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ID Code:84474
Deposited On:25 Feb 2012 13:58
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