Anomalies in the antiferromagnetic phase on CeIrSi3

International Conference on Strongly Correlated Electron Systems 2014

Iida, Hiroki^1 ; Satoh, Masashi^1 ; Kabeya, Noriyuki^1,2 ; Aoki, Haruyoshi^1,2 ; Kimura, Noriaki^1,2

Department of Physics, Graduate School of Science, Tohoku University, Sendai

980-8578, Japan^1

Center for Low Temperature Science, Tohoku University, Sendai

980-8578, Japan^2

关键词: Antiferromagnetic phase;    Electrical structures;    First-order phase transitions;    Low temperatures;    Magnetic ground state;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012012/pdf
DOI  :  10.1088/1742-6596/592/1/012012

来源: IOP

【 摘 要 】

In order to investigate a magnetic ground state and electrical structure of CeIrSi3, we have performed the electrical resistivity and specific heat measurements at low temperatures and magnetic fields. In the antiferromagnetic phase, two anomalies are found. One is a weak hump with a broad hysteresis in the resistivity at 0.6K, which implies a first-order phase transition. The other is an «N» shaped transvers-magnetoresistance. A complicated hysteresis is accompanied with the magnetoresistance. Theses anomalies disappear by applying a slight pressure. The magnetic and electronic states of CeIrSi3are complicated and sensitive to pressure.