Quantum Oscillations in kagome metals CsTi3Bi5 and RbTi3Bi5
Quantum Oscillations in kagome metals CsTi3Bi5 and RbTi3Bi5
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发表时间：
2024-01
影响因子：
1.8
通讯作者：
Zackary Rehfuss;Christopher Broyles;David Graf;Yongkang Li;Hengxin Tan;Zhen Zhao;Jiali Liu;
中科院分区：
文献类型：
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作者：
Zackary Rehfuss;Christopher Broyles;David Graf;Yongkang Li;Hengxin Tan;Zhen Zhao;Jiali Liu;
本文报道了可果美化合物ATi$_3$Bi$_5$（A=Rb，Cs）在41.5T磁场和350 mK温度下的量子振荡测量结果。除了在以前的研究中观察到的频率，我们已经观察到多个未报告的频率超过2000 T的CsTi$_3$Bi$_5$使用隧道二极管振荡器技术。我们将这些结果与密度泛函理论计算进行比较，发现在观察到的峰的数量，频率和费米面的维数与计算结果很好的一致。对于RbTi $_3 $Bi $_5 $，我们得到了不同的量子振荡谱，虽然计算的Rb化合物的量子振荡频率与Cs化合物非常相似，需要进一步的研究。
We report quantum oscillation measurements on the kagome compounds ATi$_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.