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Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd(3)As(2)

Owing to the coupling between open Fermi arcs on opposite surfaces, topological Dirac semimetals exhibit a new type of cyclotron orbit in the surface states known as Weyl orbit. Here, by lowering the carrier density in Cd(3)As(2) nanoplates, we observe a crossover from multiple-frequency to single-f...

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Autores principales: Zhang, Cheng, Narayan, Awadhesh, Lu, Shiheng, Zhang, Jinglei, Zhang, Huiqin, Ni, Zhuoliang, Yuan, Xiang, Liu, Yanwen, Park, Ju-Hyun, Zhang, Enze, Wang, Weiyi, Liu, Shanshan, Cheng, Long, Pi, Li, Sheng, Zhigao, Sanvito, Stefano, Xiu, Faxian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5668429/
https://www.ncbi.nlm.nih.gov/pubmed/29097658
http://dx.doi.org/10.1038/s41467-017-01438-y
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author Zhang, Cheng
Narayan, Awadhesh
Lu, Shiheng
Zhang, Jinglei
Zhang, Huiqin
Ni, Zhuoliang
Yuan, Xiang
Liu, Yanwen
Park, Ju-Hyun
Zhang, Enze
Wang, Weiyi
Liu, Shanshan
Cheng, Long
Pi, Li
Sheng, Zhigao
Sanvito, Stefano
Xiu, Faxian
author_facet Zhang, Cheng
Narayan, Awadhesh
Lu, Shiheng
Zhang, Jinglei
Zhang, Huiqin
Ni, Zhuoliang
Yuan, Xiang
Liu, Yanwen
Park, Ju-Hyun
Zhang, Enze
Wang, Weiyi
Liu, Shanshan
Cheng, Long
Pi, Li
Sheng, Zhigao
Sanvito, Stefano
Xiu, Faxian
author_sort Zhang, Cheng
collection PubMed
description Owing to the coupling between open Fermi arcs on opposite surfaces, topological Dirac semimetals exhibit a new type of cyclotron orbit in the surface states known as Weyl orbit. Here, by lowering the carrier density in Cd(3)As(2) nanoplates, we observe a crossover from multiple-frequency to single-frequency Shubnikov–de Haas (SdH) oscillations when subjected to out-of-plane magnetic field, indicating the dominant role of surface transport. With the increase of magnetic field, the SdH oscillations further develop into quantum Hall state with non-vanishing longitudinal resistance. By tracking the oscillation frequency and Hall plateau, we observe a Zeeman-related splitting and extract the Landau level index as well as sub-band number. Different from conventional two-dimensional systems, this unique quantum Hall effect may be related to the quantized version of Weyl orbits. Our results call for further investigations into the exotic quantum Hall states in the low-dimensional structure of topological semimetals.
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spelling pubmed-56684292017-11-07 Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd(3)As(2) Zhang, Cheng Narayan, Awadhesh Lu, Shiheng Zhang, Jinglei Zhang, Huiqin Ni, Zhuoliang Yuan, Xiang Liu, Yanwen Park, Ju-Hyun Zhang, Enze Wang, Weiyi Liu, Shanshan Cheng, Long Pi, Li Sheng, Zhigao Sanvito, Stefano Xiu, Faxian Nat Commun Article Owing to the coupling between open Fermi arcs on opposite surfaces, topological Dirac semimetals exhibit a new type of cyclotron orbit in the surface states known as Weyl orbit. Here, by lowering the carrier density in Cd(3)As(2) nanoplates, we observe a crossover from multiple-frequency to single-frequency Shubnikov–de Haas (SdH) oscillations when subjected to out-of-plane magnetic field, indicating the dominant role of surface transport. With the increase of magnetic field, the SdH oscillations further develop into quantum Hall state with non-vanishing longitudinal resistance. By tracking the oscillation frequency and Hall plateau, we observe a Zeeman-related splitting and extract the Landau level index as well as sub-band number. Different from conventional two-dimensional systems, this unique quantum Hall effect may be related to the quantized version of Weyl orbits. Our results call for further investigations into the exotic quantum Hall states in the low-dimensional structure of topological semimetals. Nature Publishing Group UK 2017-11-02 /pmc/articles/PMC5668429/ /pubmed/29097658 http://dx.doi.org/10.1038/s41467-017-01438-y Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhang, Cheng
Narayan, Awadhesh
Lu, Shiheng
Zhang, Jinglei
Zhang, Huiqin
Ni, Zhuoliang
Yuan, Xiang
Liu, Yanwen
Park, Ju-Hyun
Zhang, Enze
Wang, Weiyi
Liu, Shanshan
Cheng, Long
Pi, Li
Sheng, Zhigao
Sanvito, Stefano
Xiu, Faxian
Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd(3)As(2)
title Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd(3)As(2)
title_full Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd(3)As(2)
title_fullStr Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd(3)As(2)
title_full_unstemmed Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd(3)As(2)
title_short Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd(3)As(2)
title_sort evolution of weyl orbit and quantum hall effect in dirac semimetal cd(3)as(2)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5668429/
https://www.ncbi.nlm.nih.gov/pubmed/29097658
http://dx.doi.org/10.1038/s41467-017-01438-y
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