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Interplay of magnetism and superconductivity in CeCu2Si2 under hydrostatic pressure. by I Sheikin; D Braithwaite; J.-P Brison; A Buzdin; W Assmus is a Physics and Astronomy article available to read on EtoBox.

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## One point of interest of the heavy fermion superconductor CeCu Si is the apparent coexistence of superconductivity with a phase of magnetic origin, usually called A-phase. We have studied the behaviour of the A-phase under hydrostatic pressure. We find that it is progressively weakened, and has almost disappeared at a pressure of 3.2 kbar. We have also measured the upper critical field and find that close to the A-phase boundary, a maximum in the H (1) curve appears. We have analysed the H data taking into account a temperature dependent susceptibility (1). In order to reproduce the behaviour expected for antiferromagnetic order, the exchange integral must be negative, implying that in CeCu Si , H is enhanced by the Jaccarino-Peter effect 1999 Elsevier Science B.V. All rights reserved.

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Author

I Sheikin; D Braithwaite; J.-P Brison; A Buzdin; W Assmus

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4526)

Published

1999

Language

EN

Field

Physics and Astronomy (Physical Sciences)