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^*

^*Corresponding author for this work

Department of Electrophysics

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

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.

Original language	English
Article number	045702
Pages (from-to)	1-4
Number of pages	4
Journal	Applied Physics Express
Volume	10
Issue number	4
DOIs	https://doi.org/10.7567/APEX.10.045702
State	Published - 1 Apr 2017

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title = "Surface structure of novel semimetal WTe2",

abstract = "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.",

author = "Kazuaki Kawahara and Zeyuan Ni and Ryuichi Arafune and Tetsuroh Shirasawa and Chun-Liang Lin and Emi Minamitani and Satoshi Watanabe and Maki Kawai and Noriaki Takagi",

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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

Y1 - 2017/4/1

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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DO - 10.7567/APEX.10.045702

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VL - 10

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EP - 4

JO - Applied Physics Express

JF - Applied Physics Express

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ER -

Surface structure of novel semimetal WTe₂

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