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28 March 2024 |
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Article overview
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Anomalous Quantum Oscillations in 3D Dirac Semimetal Cd3As2 Induced by 3D Nested Anisotropic Fermi Surface | Yanfei Zhao
; Haiwen Liu
; Chenglong Zhang
; Huichao Wang
; Junfeng Wang
; Ziquan Lin
; Ying Xing
; Hong Lu
; Jun Liu
; Yong Wang
; Shuang Jia
; X. C. Xie
; Jian Wang
; | Date: |
1 Dec 2014 | Abstract: | The three-dimensional (3D) topological Dirac semimetal is a new topological
phase of matter, viewed as the 3D analogy of graphene with a linear dispersion
in the 3D momentum space. Here, we report the angular dependent
magnetotransport in Cd3As2 single crystal and clearly show how the Fermi
surface evolves when tilting the magnetic field. Remarkably, when the magnetic
field lies in [112] and [11=i] axis, only single oscillation period features
present, however, the system shows double period oscillations when the field is
applied along [1=i0] direction. Moreover, tilting the magnetic field at
certain direction also gives double period oscillations. We attribute the
anomalous oscillation behavior to the sophisticated geometry of Fermi surface
and illustrate a complete 3D Fermi surfaces with two nested anisotropic
ellipsoids around the Dirac point. Additionally, a sub-millimeter mean free
path at 6 K is observed in Cd3As2 crystal, indicating a large ballistic
transport region in this material. These results improve the knowledge of the
Dirac semimetal material Cd3As2, and also pave the way for proposing new
electronic applications based on 3D Dirac materials. | Source: | arXiv, 1412.0330 | Services: | Forum | Review | PDF | Favorites |
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