Surface structure of novel semimetal WTe2

Kazuaki Kawahara; Zeyuan Ni; Ryuichi Arafune; Tetsuroh Shirasawa; Chun-Liang Lin; Emi Minamitani; Satoshi Watanabe; Maki Kawai; Noriaki Takagi

doi:10.7567/APEX.10.045702

Surface structure of novel semimetal WTe₂

Kazuaki Kawahara, Zeyuan Ni, Ryuichi Arafune, Tetsuroh Shirasawa, Chun-Liang Lin, Emi Minamitani, Satoshi Watanabe, Maki Kawai, Noriaki Takagi^*

^*此作品的通信作者

電子物理學系

研究成果: Article › 同行評審

6 引文斯高帕斯（Scopus）

摘要

We investigate the atomic structure of the tungsten ditelluride (WTe₂) surface by using low-energy electron diffraction (LEED), scanning tunneling microscopy, and density functional theory (DFT) calculations. From the LEED and DFT analyses, we find small but non-negligible surface relaxation that gradually decays in an oscillatory manner inside the first WTe₂ layer. In addition, the DFT calculations reveal that the Fermi surface topology is sensitive to this relaxation. These results are helpful for understanding the exotic properties of WTe₂.

原文	English
文章編號	045702
頁（從 - 到）	1-4
頁數	4
期刊	Applied Physics Express
卷	10
發行號	4
DOIs	https://doi.org/10.7567/APEX.10.045702
出版狀態	Published - 1 4月 2017

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AU - Kawahara, Kazuaki

AU - Ni, Zeyuan

AU - Arafune, Ryuichi

AU - Shirasawa, Tetsuroh

AU - Lin, Chun-Liang

AU - Minamitani, Emi

AU - Watanabe, Satoshi

AU - Kawai, Maki

AU - Takagi, Noriaki

PY - 2017/4/1

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N2 - We investigate the atomic structure of the tungsten ditelluride (WTe2) surface by using low-energy electron diffraction (LEED), scanning tunneling microscopy, and density functional theory (DFT) calculations. From the LEED and DFT analyses, we find small but non-negligible surface relaxation that gradually decays in an oscillatory manner inside the first WTe2 layer. In addition, the DFT calculations reveal that the Fermi surface topology is sensitive to this relaxation. These results are helpful for understanding the exotic properties of WTe2.

AB - We investigate the atomic structure of the tungsten ditelluride (WTe2) surface by using low-energy electron diffraction (LEED), scanning tunneling microscopy, and density functional theory (DFT) calculations. From the LEED and DFT analyses, we find small but non-negligible surface relaxation that gradually decays in an oscillatory manner inside the first WTe2 layer. In addition, the DFT calculations reveal that the Fermi surface topology is sensitive to this relaxation. These results are helpful for understanding the exotic properties of WTe2.

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JO - Applied Physics Express

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ER -

Surface structure of novel semimetal WTe2

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Surface structure of novel semimetal WTe₂