Quantum Oscillations in kagome metals CsTi3Bi5 and RbTi3Bi5

Zackary Rehfuss; Christopher Broyles; David Graf; Yongkang Li; Hengxin Tan; Zhen Zhao; Jiali Liu; Yuhang Zhang; Xiaoli Dong; Haitao Yang; Hongjun Gao; Binghai Yan; Sheng Ran

Quantum Oscillations in kagome metals CsTi3Bi5 and RbTi3Bi5

Strongly Correlated Electrons 2024-01-25 v1

Authors: Zackary Rehfuss , Christopher Broyles , David Graf , Yongkang Li , Hengxin Tan , Zhen Zhao , Jiali Liu , Yuhang Zhang , Xiaoli Dong , Haitao Yang , Hongjun Gao , Binghai Yan , Sheng Ran

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Abstract

We report quantum oscillation measurements on the kagome compounds ATi $_3$ Bi $_5$ (A=Rb, Cs) in magnetic fields up to 41.5 T and temperatures down to 350 mK. In addition to the frequencies observed in previous studies, we have observed multiple unreported frequencies above 2000 T in CsTi $_3$ Bi $_5$ using a tunnel diode oscillator technique. We compare these results against density functional theory calculations and find good agreement with the calculations in the number of peaks observed, frequency, and the dimensionality of the Fermi surface. For RbTi $_3$ Bi $_5$ we have obtained a different quantum oscillation spectrum, although calculated quantum oscillation frequencies for the Rb compound are remarkably similar to the Cs compound, calling for further studies.

Keywords

quantum oscillations kagome metals Fermi surface density functional theory tunnel diode oscillator

Cite

@article{arxiv.2401.13628,
  title  = {Quantum Oscillations in kagome metals CsTi3Bi5 and RbTi3Bi5},
  author = {Zackary Rehfuss and Christopher Broyles and David Graf and Yongkang Li and Hengxin Tan and Zhen Zhao and Jiali Liu and Yuhang Zhang and Xiaoli Dong and Haitao Yang and Hongjun Gao and Binghai Yan and Sheng Ran},
  journal= {arXiv preprint arXiv:2401.13628},
  year   = {2024}
}

Quantum Oscillations in kagome metals CsTi3Bi5 and RbTi3Bi5

Abstract

Keywords

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