High pressure and high magnetic field studies of the electronic transport properties of the antiferromagnet Eu3Ir4Sn13

International Conference on Strongly Correlated Electron Systems 2014

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

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.