Observation of Quantum Oscillations in CaAs3
Author Information
Author(s): Wang Yuxiang, Zhao Minhao, Zhang Jinglei, Wu Wenbin, Li Shichao, Zhang Yong, Jiang Wenxiang, Joseph Nesta Benno, Xu Liangcai, Mou Yicheng, Yang Yunkun, Leng Pengliang, Zhang Yong, Pi Li, Suslov Alexey, Ozerov Mykhaylo, Wyzula Jan, Orlita Milan, Zhu Fengfeng, Zhang Yi, Kou Xufeng, Zhu Zengwei, Narayan Awadhesh, Qian Dong, Wen Jinsheng, Yuan Xiang, Xiu Faxian, Zhang Cheng
Primary Institution: Fudan University
Hypothesis
Can quantum oscillations be observed near the Mott-Ioffe-Regel limit in CaAs3?
Conclusion
The study found that CaAs3 exhibits quantum oscillations and quasiparticle mass enhancement near the Mott-Ioffe-Regel limit, indicating highly coherent band transport despite an insulator-like resistivity.
Supporting Evidence
- CaAs3 shows giant magnetoresistance and prominent Shubnikov–de Haas oscillations.
- The quasiparticle effective mass increases with magnetic fields.
- Quantum oscillations are absent in magnetic torque measurements.
Takeaway
Scientists looked at a material called CaAs3 and found that it can still show special behaviors called quantum oscillations even when it seems like an insulator. This means the electrons can move in a very organized way.
Methodology
The researchers performed magneto-transport experiments on CaAs3 bulk crystals using various magnetic fields and temperatures.
Limitations
The study did not explore the effects of different sample conditions on the observed phenomena.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website