International Conference on Strongly Correlated Electron Systems 2014 | |
High pressure and high magnetic field studies of the electronic transport properties of the antiferromagnet Eu3Ir4Sn13 | |
Mendonça-Ferreira, L.^1 ; Bittar, E.M.^2 ; Bianchi, I.K.E.^1 ; Rosa, P.F.S.^3,4 ; Fisk, Z.^4 ; Pagliuso, P.G.^3 | |
Centro de Ciências Naturais e Humanas, UFABC, Santo-André-SP | |
09210-580, Brazil^1 | |
Centro Brasileiro de Pesquisas Físicas, Rio-de-Janeiro-RJ | |
22290-180, Brazil^2 | |
Instituto de Física Gleb Wataghin, UNICAMP, Campinas-SP | |
13083-859, Brazil^3 | |
Department of Physics and Astronomy, University of California, Irvine | |
CA | |
92697-4574, United States^4 | |
关键词: Antiferromagnetic transition; Dc electrical resistivities; Electronic transport properties; High-temperature anomalies; Localized magnetic moments; Magnetoelastic effects; Structural distortions; Structural instability; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012046/pdf DOI : 10.1088/1742-6596/592/1/012046 |
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来源: IOP | |
【 摘 要 】
In this work we report the effects of hydrostatic pressure and magnetic field on the electronic transport properties of the antiferromagnetic compound Eu3Ir4Sn13(TN∼ 10 K). Single crystals of Eu3Ir4Sn13were synthesized using the Sn self-flux technique. DC electrical resistivity measurements as a function of temperature were performed by means of the four- probe technique. The high-temperature anomaly at T∗ ∼ 57 K attributed to a structural distortion of the Sn1Sn212cages in Eu3Ir4Sn13is rapidly decreased to lower temperatures at a rate dT∗/dP 2 K/kbar, while the antiferromagnetic transition due to the Eu2+ions is only weakly affected. Our data do not indicate any magnetoelastic effect associated with the structural instability at T∗ . Furthermore, the suppression of the lattice distortion by application of external pressure is not accompanied by the emergence of superconductivity, possibly due to strong magnetic correlations between the Eu2+localized magnetic moments.
【 预 览 】
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