Autor(es)

Rosa, P. F. S. ; Oostra, A. ; Thompson, J. D. ; Pagliuso, P. G. ; Fisk, Z.

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW B; v. 94, n. 4, p. 6-pg., 2016-07-05.

Resumo

We investigate single crystals of Ce1-xNdxRhIn5 by means of x-ray-diffraction, microprobe, magnetic susceptibility, heat capacity, and electrical resistivity measurements. Our data reveal that the antiferromagnetic transition of CeRhIn5, at T-N(Ce) = 3.8 K, is linearly suppressed with x(Nd). We associate this effect with the presence of a "Kondo hole" created by Nd substitution. The extrapolation of T-N(Ce) to zero temperature, however, occurs at x(c) similar to 0.3, which is below the two-dimensional percolation limit found in Ce1-xLaxRhIn5. This result strongly suggests the presence of a crystal-field induced magnetic frustration. Near x(Nd) similar to 0.2, the Ising antiferromagnetic order from Nd3+ ions is stabilized and T-N(Nd) increases up to 11 K in NdRhIn5. Our results shed light on the effects of magnetic doping in heavy-fermion antiferromagnets and stimulate the study of such systems under applied pressure. (AU)

• Processo FAPESP: 12/04870-7 - Estudos de novos materiais complexos e avançados
• Beneficiário: Pascoal Jose Giglio Pagliuso
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/20181-0 - Evolução do comportamento isolante Kondo topológico em Sm1xRxB6 (r = Sr, Yb)
• Beneficiário: Priscila Ferrari Silveira Rosa
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado