通过科比诺测量研究韦尔轨道量子霍尔效应中的边缘态和块态

IF 1.5 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Journal of the Physical Society of Japan Pub Date : 2024-01-26 DOI:10.7566/jpsj.93.023706

Yusuke Nakazawa, Ryosuke Kurihara, Masatoshi Miyazawa, Shinichi Nishihaya, Markus Kriener, Masashi Tokunaga, Masashi Kawasaki, Masaki Uchida

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引用次数: 0

摘要

我们通过测量由拓扑狄拉克半金属 (Cd1-xZnx)3As2 薄膜制造的科比诺型器件，研究了基于韦尔轨道的量子霍尔效应中的边缘态和体态。在测量科比诺型器件的单侧终端时，可以观察到明显的量子霍尔高原。这表明韦尔轨道量子霍尔效应的边缘态形成了由费米弧和手性零模组成的闭合轨迹，内外两侧各不相同。另一方面，在出现量子霍尔高原的电场中，体电阻并没有发散，这表明在通过体区域施加电流时，体区域的韦尔轨道并没有完全局部化。

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Edge and Bulk States in Weyl-Orbit Quantum Hall Effect as Studied by Corbino Measurements

We investigate edge and bulk states in Weyl-orbit based quantum Hall effect by measuring a Corbino-type device fabricated from a topological Dirac semimetal (Cd₁₋_xZn_x)₃As₂ film. Clear quantum Hall plateaus are observed when measuring one-sided terminals of the Corbino-type device. This indicates that edge states of the Weyl-orbit quantum Hall effect form closed trajectories consisting of Fermi arcs and chiral zero modes independently on inner and outer sides. On the other hand, the bulk resistance does not diverge at fields where the quantum Hall plateau appears, suggesting that the Weyl orbits in the bulk region are not completely localized when applying electric current through the bulk region.

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来源期刊

Journal of the Physical Society of Japan 物理-物理：综合

CiteScore

3.40

自引率

17.60%

发文量

325

审稿时长

3 months

期刊介绍： The papers published in JPSJ should treat fundamental and novel problems of physics scientifically and logically, and contribute to the development in the understanding of physics. The concrete objects are listed below. Subjects Covered JPSJ covers all the fields of physics including (but not restricted to) Elementary particles and fields Nuclear physics Atomic and Molecular Physics Fluid Dynamics Plasma physics Physics of Condensed Matter Metal, Superconductor, Semiconductor, Magnetic Materials, Dielectric Materials Physics of Nanoscale Materials Optics and Quantum Electronics Physics of Complex Systems Mathematical Physics Chemical physics Biophysics Geophysics Astrophysics.