[15p-P05-1~62] 17 Nanocarbon and Two-Dimensional Materials (Poster)

[15p-P05-45] Electronic states of atomic-layer WTe₂ studied by micro-ARPES

〇Katsuaki Sugawara^1,2,3, Ryuichi Ando¹, Tappei Kawakami¹, Koki Yanagizawa¹, Ken Yaegashi¹, Takashi Takahashi¹, Takafumi Sato^1,2,4,5,6 (1.Dept. Phys., Tohoku Univ., 2.WPI-AIMR, Tohoku Univ., 3.JST-PRESTO, 4.CSIS, Tohoku Univ., 5.SRIS, Tohoku Univ., 6.MathCSS, Tohoku Univ.)

Keywords:

atomic-layer TMD,electronic state,ARPES

Bulk transition-metal dichalcogenide WTe₂ is well known to have two kinds of stable crystal-structure Td and 2H structures, and the electronic properties strongly depend on these structures. On the other hand, the electronic properties of a monolayer (atomic-layer) WTe₂ are not well understood yet. In this study, we have succeeded in observing the electronic states of atomic-layer WTe₂ thin films depending on the crystal structure by precisely tunning the sample growth conditions using MBE. In this talk, we will discuss the crystal structure-dependent electronic states of atomiclayer WTe₂.