Fermi surface of the Kagome materials ATi3Bi5 (A=Cs,Bi)

ORAL

Abstract

We report quantum oscillation measurements on the kagome compounds ATi3Bi5 (A=Rb, Cs) in magnetic fields up to 41.5 T and temperatures down to 550 mK. We have performed Lifshitz Kosevich fittings to extract the effective masses and have measured the observed peak frequency as a function of angle to get information about the dimensionality of the fermi surface. In addition to the frequencies observed in previous studies, we have observed multiple unreported frequencies above 2000 T using a tunnel diode oscillator technique. We compare these results against DFT calculations and find good agreement with the DFT in the number of peaks observed, frequency, and the dimensionality of the Fermi surface.

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Presenters

  • Zackary R Rehfuss

    Washington University, St. Louis

Authors

  • Zackary R Rehfuss

    Washington University, St. Louis

  • Sheng Ran

    Washington University in St. Louis

  • Christopher Broyles

    Washington University in St. Louis

  • David E Graf

    Florida State University, National High Magnetic Fields Laboratory, Florida State University, National High Magnetic Field Laboratory, Florida State University

  • Yongkang Li

    Weizmann Institute of Science

  • Hengxin Tan

    Weizmann Institute of Science

  • Haitao Yang

    Chinese Academy of Sciences,Institute of Physics, Institue of Physics, CAS

  • Xiaoli Dong

    Insititute of physics, CAS, Chinese Academy of Sciences,Institute of Physics, Institue of Physics, Chinese Academy of Sciences

  • Hongjun Gao

    Chinese Academy of Sciences,Institute of Physics

  • Binghai Yan

    Weizmann Institute of Science