中国物理B ›› 2024, Vol. 33 ›› Issue (6): 66401-066401.doi: 10.1088/1674-1056/ad362c
Pressure-induced magnetic phase and structural transition in SmSb2
Tao Li(李涛)1,2, Shuyang Wang(王舒阳)2,†, Xuliang Chen(陈绪亮)1,2, Chunhua Chen(陈春华)2, Yong Fang(房勇)3, and Zhaorong Yang(杨昭荣)1,2,4,5,‡
- 1 Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China;
2 Anhui Key Laboratory of Low-Energy Quantum Materials and Devices, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei 230031, China;
3 Jiangsu Laboratory of Advanced Functional Materials, Department of Physics, Changshu Institute of Technology, Changshu 215500, China;
4 Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China;
5 Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
Pressure-induced magnetic phase and structural transition in SmSb2
Tao Li(李涛)1,2, Shuyang Wang(王舒阳)2,†, Xuliang Chen(陈绪亮)1,2, Chunhua Chen(陈春华)2, Yong Fang(房勇)3, and Zhaorong Yang(杨昭荣)1,2,4,5,‡
- 1 Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China;
2 Anhui Key Laboratory of Low-Energy Quantum Materials and Devices, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei 230031, China;
3 Jiangsu Laboratory of Advanced Functional Materials, Department of Physics, Changshu Institute of Technology, Changshu 215500, China;
4 Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China;
5 Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
摘要： Motivated by the recent discovery of unconventional superconductivity around a magnetic quantum critical point in pressurized CeSb$_{2}$, here we present a high-pressure study of an isostructural antiferromagnetic (AFM) SmSb$_{2}$ through electrical transport and synchrotron x-ray diffraction measurements. At $P_{\rm C} \sim 2.5 $GPa, we found a pressure-induced magnetic phase transition accompanied by a Cmca, $\to P$4nmm structural phase transition. In the pristine AFM phase below $P_{\rm C}$, the AFM transition temperature of SmSb$_{2}$ is insensitive to pressure; in the emergent magnetic phase above $P_{\rm C}$, however, the magnetic critical temperature increases rapidly with increasing pressure. In addition, at ambient pressure, the magnetoresistivity (MR) of SmSb$_{2}$ increases suddenly upon cooling below the AFM transition temperature and presents linear nonsaturating behavior under high field at 2K. With increasing pressure above $P_{\rm C}$, the MR behavior remains similar to that observed at ambient pressure, both in terms of temperature- and field-dependent MR. This leads us to argue an AFM-like state for SmSb$_{2}$ above $P_{\rm C}$. Within the investigated pressure of up to 45.3GPa and the temperature of down to 1.8K, we found no signature of superconductivity in SmSb$_{2}$.
中图分类号: (Solid-solid transitions)
- 64.70.K