| Full text | |
| Author(s): |
Collave, J. R.
[1]
;
Borges, H. A.
[1]
;
Ramos, S. M.
[2, 3]
;
Hering, E. N.
[2, 3]
;
Fontes, M. B.
[2]
;
Baggio-Saitovitch, E.
[2]
;
Mendonca-Ferreira, L.
[4]
;
Bittar, E. M.
[2]
;
Pagliuso, P. G.
[5]
Total Authors: 9
|
| Affiliation: | [1] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22453900 Rio De Janeiro, RJ - Brazil
[2] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ - Brazil
[3] UJF Grenoble 1, SPSMS, UMR E CEA, F-38054 Grenoble - France
[4] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil
[5] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Journal of Applied Physics; v. 117, n. 17 MAY 7 2015. |
| Web of Science Citations: | 6 |
| Abstract | |
The non-magnetic heavy fermion compound Ce3Co4Sn13 was studied under pressure. We report single crystalline measurements of electrical resistivity as a function of temperature rho(T) under pressure. Some characteristic features related to a structural transition (T-S), crystalline field effects (T-CEF), and a low temperature maximum (T-max), possibly connected simultaneously to the onset of Kondo lattice coherence and short range magnetic correlations, were identified in the rho(T) data. A pressure-temperature phase diagram with T-S and T-max was constructed by mapping these features. Like for most Ce-based heavy fermion compounds, T-max moves to higher temperatures with pressure, indicating that it is related to the Kondo energy scale, due to the increase of hybridization induced by pressure. On the other hand, T-S, associated to a superlattice distortion and probably combined with a charge density wave transition, decreases as a function of pressure. However, differently from the Sr3-xCaxIr4Sn13 system, where a superlattice quantum phase transition is observed {[}L. E. Klintberg et al., Phys. Rev. Lett. 109, 237 008 (2012)], in Ce3Co4Sn13 T-S similar to 154 K, at ambient pressure (P = 0), seems to stabilize at around 143K for P >= 19 kilobars. We also investigated rho(T) in external magnetic fields, at P = 0. Negative magnetoresistance and increase of T-max are observed, suggesting suppression of low temperature short range magnetic correlations. (C) 2015 AIP Publishing LLC. (AU) | |
| FAPESP's process: | 11/19924-2 - Study and development of advanced novel materials: electronic, magnetic and nanostructured: an interdisciplinary approach |
| Grantee: | Carlos Rettori |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 12/04870-7 - Studies of novel complex and advanced materials |
| Grantee: | Pascoal Jose Giglio Pagliuso |
| Support Opportunities: | Research Projects - Thematic Grants |