| Texto completo | |
| Autor(es): |
Shirai, M.
[1, 2]
;
Freitas, R. S.
[3]
;
Lago, J.
[4]
;
Bramwell, S. T.
[1, 2]
;
Ritter, C.
[5]
;
Zivkovic, I.
[6]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] UCL, London Ctr Nanotechnol, 17-19 Gordon, London WC1H 0AJ - England
[2] UCL, Dept Phys & Astron, 17-19 Gordon, London WC1H 0AJ - England
[3] Univ Sao Paulo, Inst Fis, CP 66318, BR-05314970 Sao Paulo, SP - Brazil
[4] Univ Basque Country, UPV EHU, Dept Inorgan Chem, E-48080 Bilbao - Spain
[5] Inst Laue Langevin, Boite Postale 156X, F-38042 Grenoble 9 - France
[6] Ecole Polytech Fed Lausanne, Inst Phys, Lab Quantum Magnetism, CH-1015 Lausanne - Switzerland
Número total de Afiliações: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Physical Review B; v. 96, n. 18 NOV 20 2017. |
| Citações Web of Science: | 2 |
| Resumo | |
We present the results of the investigation of magnetic properties of the Er2Ti2-xSnxO7 series. For small doping values, the ordering temperature decreases linearly with x, while the moment configuration remains the same as in the x = 0 parent compound. Around x = 1.7 doping level, we observe a change in the behavior, where the ordering temperature starts to increase and new magnetic Bragg peaks appear. For the first time, we present evidence of a long-range order (LRO) in Er2Sn2O7 (x = 2.0) below T-N = 130 mK. It is revealed that the moment configuration corresponds to a Palmer-Chalker type with a value of the magnetic moment significantly renormalized compared to x = 0. We discuss our results in the framework of a possible quantum phase transition occurring close to x = 1.7. (AU) | |
| Processo FAPESP: | 15/16191-5 - Pesquisas em novos materiais envolvendo campos magnéticos intensos e baixas temperaturas |
| Beneficiário: | Gennady Gusev |
| Linha de fomento: | Auxílio à Pesquisa - Temático |