中国物理B ›› 2026, Vol. 35 ›› Issue (5): 57103-057103.doi: 10.1088/1674-1056/ae3c92
Structure and transport properties of HoNiO3 under high pressure
Liyan Wang(汪礼艳)1,2, Di Peng(彭帝)2, Yuchen Cui(崔雨晨)3, Yiming Wang(王弈铭)2, Jingxin Gao(高景鑫)3, Tao Luo(罗涛)2, Zhikai Zhu(朱智凯)2, Kejun Bu(卜克军)2, Yuzhu Wang(王玉柱)4, Sibo Zhan(展思博)5, Jikun Chen(陈吉堃)3, Huaqing Xie(谢华清)1, Zihua Wu(吴子华)1,†, Hongliang Dong(董洪亮)2,‡, and Zhidan Zeng(曾徵丹)2
- 1 School of Energy and Materials, Shanghai Polytechnic University, Shanghai 201209, China;
2 Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China;
3 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
4 Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China;
5 Analysis Center of Agrobiology and Environmental Sciences, Faculty of Agriculture, Life and Environment Sciences, Hangzhou 310058, China
Structure and transport properties of HoNiO3 under high pressure
Liyan Wang(汪礼艳)1,2, Di Peng(彭帝)2, Yuchen Cui(崔雨晨)3, Yiming Wang(王弈铭)2, Jingxin Gao(高景鑫)3, Tao Luo(罗涛)2, Zhikai Zhu(朱智凯)2, Kejun Bu(卜克军)2, Yuzhu Wang(王玉柱)4, Sibo Zhan(展思博)5, Jikun Chen(陈吉堃)3, Huaqing Xie(谢华清)1, Zihua Wu(吴子华)1,†, Hongliang Dong(董洪亮)2,‡, and Zhidan Zeng(曾徵丹)2
- 1 School of Energy and Materials, Shanghai Polytechnic University, Shanghai 201209, China;
2 Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China;
3 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
4 Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China;
5 Analysis Center of Agrobiology and Environmental Sciences, Faculty of Agriculture, Life and Environment Sciences, Hangzhou 310058, China
摘要： Rare-earth nickelate ($Re$NiO$_3$, with $Re \ne {\rm La}$) constitutes a paradigmatic class of strongly correlated electron systems, exhibiting a remarkable tunability of the metal-insulator transition (MIT) in response to external stimuli such as hydrostatic pressure, temperature, and chemical doping. This tunability arises from the competitive interplay among charge, spin, and orbital degrees of freedom. However, the fundamental mechanisms governing the effective control of the MIT under extreme conditions, particularly the intricate coupling between lattice dynamics and electronic localization, remain elusive. This knowledge gap poses a significant challenge to both fundamental research and practical applications of these materials. Herein, we present a systematic investigation of the structural phase transitions and electrical transport properties of HoNiO$_3$ under extreme conditions. In situ high-pressure x-ray diffraction (XRD) analysis uncovers a structural evolution pathway: an initial transition from a monoclinic insulating phase ($P2_1/n$) to an orthorhombic metallic phase (Pbnm) at approximately 17 GPa, followed by the emergence of a mixed-phase region (Pbnm and $R\bar{3}c$) at approximately 35 GPa. Complementary electrical transport measurements reveal a pronounced sensitivity of the metal-insulator transition temperature ($T_{\rm MIT}$) to the synergistic effects of high pressure and low temperature. These findings not only provide crucial experimental evidence for elucidating the structure-property relationship in HoNiO$_3$ under extreme conditions, but also lay a conceptual foundation for designing advanced functional devices based on $Re$NiO$_3$ materials, with promising applications in high-sensitivity pressure sensors and temperature-responsive switches featuring tunable activation thresholds.
中图分类号: (Metal-insulator transitions and other electronic transitions)
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