Probing the phase diagram of CeRu_2Ge_2 by thermopower at high pressure

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dc.creatorWilhelm, H.
dc.creatorJaccard, D.
dc.date2004-02-06
dc.date.accessioned2026-07-07T02:56:21Z
dc.date.available2026-07-07T02:56:21Z
dc.descriptionThe temperature dependence of the thermoelectric power, S(T), and the electrical resistivity of the magnetically ordered CeRu_2Ge_2 (T_N=8.55 K and T_C=7.40 K) were measured for pressures p < 16 GPa in the temperature range 1.2 K < T < 300 K. Long-range magnetic order is suppressed at a p_c of approximately 6.4 GPa. Pressure drives S(T) through a sequence of temperature dependences, ranging from a behaviour characteristic for magnetically ordered heavy fermion compounds to a typical behaviour of intermediate-valent systems. At intermediate pressures a large positive maximum develops above 10 K in S(T). Its origin is attributed to the Kondo effect and its position is assumed to reflect the Kondo temperature T_K. The pressure dependence of T_K is discussed in a revised and extended (T,p) phase diagram of CeRu_2Ge_2.
dc.description7 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0402187
dc.identifierhttp://arxiv.org/abs/cond-mat/0402187
dc.identifierPhys. Rev. B 69, 214408 (2004)
dc.identifierdoi:10.1103/PhysRevB.69.214408
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23287
dc.subjectStrongly Correlated Electrons
dc.titleProbing the phase diagram of CeRu_2Ge_2 by thermopower at high pressure
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