From an antiferromagnet to a heavy-fermion system: CeCu5Au under pressure

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dc.creatorWilhelm, H.
dc.creatorRaymond, S.
dc.creatorJaccard, D.
dc.creatorStockert, O.
dc.creatorLoehneysen, H. v.
dc.date1999-08-30
dc.date.accessioned2026-07-07T03:14:23Z
dc.date.available2026-07-07T03:14:23Z
dc.descriptionThe electrical resistivity rho(T) of single crystalline CeCu_5Au under pressure was measured in the temperature range 30mK<T<300K. Pressure suppresses the antiferromagnetic order (T_N=2.35K at ambient pressure) and drives the system into a non-magnetic heavy-fermion state above P_c=4.1(3)GPa. The electrical resistivity shows a deviation from a T^2 dependence of a Fermi-liquid in the pressure range 1.8GPa<=P<=5.15GPa. The rho(T)-curves can be compared with those of CeCu_{6-x}Au_x at different Au concentrations. Just before the long-range magnetic order vanishes, a possibly superconducting phase (at T_c=0.1K and P=3.84GPa) occurs, pointing to a coexistence of antiferromagnetic order and superconductivity. This new phase is only seen in a narrow pressure interval Delta P=0.4GPa.
dc.description4 pages, RevTex, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9908442
dc.identifierhttp://arxiv.org/abs/cond-mat/9908442
dc.identifierScience and Technology of High Pressure, Proceedings of AIRAPT-17, edited by M.H. Manghnani, W.J. Nellis, M.F. Nicol, pp.697-700, Universities Press, Hyderabad, India, 2000
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/29650
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleFrom an antiferromagnet to a heavy-fermion system: CeCu5Au under pressure
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