凝聚态物理
量子霍尔效应
朗道量子化
物理
量子振荡
磁场
霍尔效应
磁电阻
散射
舒布尼科夫-德哈斯效应
费米面
有效质量(弹簧-质量系统)
异常(物理)
量子极限
量子
量子力学
超导电性
作者
Qingguo Xie,Cheng Wang,Sihan Yan,Limin Chen,Jian Zheng,Wei Wang
摘要
We report the magneto-transport measurements on bulk HfTe5 with carrier mobility exceeding 100 000 cm2/(V s). The longitudinal resistance anomaly and the sign change in Hall coefficient with temperature are observed, which may be induced by Lifshitz transition. When the magnetic field is applied along the b-axis and a-axis at low temperature, a series of Shubnikov–de Haas oscillations on the longitudinal transport exhibit, demonstrating a three-dimensional Fermi-surface pocket for HfTe5 rather than two-dimensional (2D). The investigations on Landau level fan diagram confirm the existence of the non-trivial π Berry phase. The cyclotron mass mcyc as around 0.02me and quantum scattering time τ at about 1.76 ps are also estimated with Lifshitz–Kosevich theory. Further detailed analysis suggests that a stacked quantum Hall effect attributed to multi-parallel 2D conduction layers develops in HfTe5.
科研通智能强力驱动
Strongly Powered by AbleSci AI