Journal
PHYSICA B-CONDENSED MATTER
Volume 281, Issue -, Pages 991-992Publisher
ELSEVIER
DOI: 10.1016/S0921-4526(99)01090-X
Keywords
URu2Si2; paramagnetic effects; superconducting mixed state
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Magnetization measurements of a heavy fermion compound URu2Si2 have been performed in the superconducting state. Broad peak structure of the irreversible magnetization was observed around 50 kOe for H parallel to n. The Ginzburg-landau parameter obtained from the equilibrium magnetization slightly decreases for H parallel to c with decreasing temperature, suggesting the presence of the paramagnetic suppression of the superconductivity. However, the suppression is not so large as expected from the H-c2(T) curve. Thermodynamic critical field appears to show unusual temperature dependence. (C) 2000 Elsevier Science B.V. All rights reserved.
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