The de Haas-van Alphen quantum oscillations in the kagome metal RbTi3Bi5

扫码查看

原文链接

万方数据

外文摘要：The kagome system has attracted great interest in condensed matter physics due to its unique structure that can host various exotic states such as superconductivity(SC),charge density waves(CDWs)and nontrivial topological states.The topological semimetal RbTi3Bi5 consisting of a Ti kagome layer shares a similar crystal structure to the topological correlated materials AV3Sb5(A=K,Rb,Cs)but without the absence of CDW and SC.Systematic de Haas-van Alphen oscillation measurements are performed on single crystals of RbTi3Bi5 to pursue nontrivial topological physics and exotic states.Combining this with theoretical calculations,the detailed Fermi surface topology and band structure are investigated.A two-dimensional Fermi pocket β is revealed with a light effective mass,consistent with the semimetal predictions.The Landau fan diagram of RbTi3Bi5 reveals a zero Berry phase for the β oscillation in contrast to that of CsTi3Bi5.These results suggest that kagome RbTi3Bi5 is a good candidate for exploring nontrivial topological exotic states and topological correlated physics.

外文关键词：

oscillationFermi surfaceband structure

作者：

董自仙、石磊、王彬、霍梦五、黄星、黄潮欣、马培跃、张云蔚、沈冰、王猛

展开 >

作者单位：

Center for Neutron Science and Technology,Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices,School of Physics,Sun Yat-Sen University,Guangzhou 510275,China

基金：

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaGuangdong Basic and Applied Basic Research FundsGuangdong Basic and Applied Basic Research FundsGuangzhou Basic and Applied Basic Research FundsGuangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices

项目编号：

2023YFA140650012174454U2130101921652042024B15150200402022A15150100352024A04J64172022B1212010008

出版年：

2024

DOI：

10.1088/1674-1056/ad6a0a

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(10)