高压物理学报2026，Vol.40Issue(6)：13-22,10.DOI:10.11858/gywlxb.20251291
高压诱导YbMnBi2磁性转变的电输运研究
Electrical Transport of Pressure-Induced Magnetic Transition in YbMnBi2
摘要
Abstract
In this work,we performed systematic high-pressure electrical transport and Raman spectroscopy measurements on the topological semimetal YbMnBi2.The transport results reveal a pronounced evolution of the resistivity-temperature behavior with increasing pressure.A negative magnetoresistance emerges above 16.8 GPa,and a clear anomalous Hall effect characterized by a hysteretic Hall resistivity loop is observed at higher pressures around 30.1 GPa.These transport anomalies,together with the continuous evolution of the Raman spectra in the corresponding pressure range,indicate the formation of a pressure-induced magnetic ordered state with a net magnetic moment component.By systematically analyzing the pressure-dependent evolution of the resistivity-temperature characteristics,magnetoresistance behavior,and Hall effect,this work demonstrates the cooperative tuning of magnetic ordering and topological electronic states in YbMnBi2 under pressure.Our results provide new experimental insight into pressure-controlled magnetic and transport properties in topological semimetals and highlight their potential relevance for spin-related electronic applications.关键词
高压/反常霍尔效应/负磁阻/磁有序态/拓扑半金属Key words
high pressure/anomalous Hall effect/negative magnetoresistance/magnetic ordered state/topological semimetal分类
数理科学引用本文复制引用
文天琪,冯琦,李美伦,程怡,林传龙,肖宏..高压诱导YbMnBi2磁性转变的电输运研究[J].高压物理学报,2026,40(6):13-22,10.基金项目
国家自然科学基金委员会-中国工程物理研究院NSAF联合基金(U1530402) （U1530402）
