角分辨光电子能谱
凝聚态物理
材料科学
超导电性
范德瓦尔斯力
电子结构
电子能带结构
表征(材料科学)
结晶学
密度泛函理论
Crystal(编程语言)
晶体结构
物理
纳米技术
量子力学
化学
分子
计算机科学
程序设计语言
作者
Y. Shemerliuk,Andrii Kuibarov,Oleg D. Feya,Mahdi Behnami,H. Reichlova,V. Suvorov,S. Selter,D. V. Efremov,С. В. Борисенко,B. Büchner,Saicharan Aswartham
出处
期刊:Physical Review Materials
[American Physical Society]
日期:2023-03-31
卷期号:7 (3)
被引量:1
标识
DOI:10.1103/physrevmaterials.7.033405
摘要
Layered semimetallic van der Waals materials TiSe2 has attracted a lot of attention because of interplay of a charge density wave (CDW) state and superconductivity. Its sister compound TiS2, being isovalent to TiSe2 and having the same crystal structure, shows a semiconducting behavior. The natural rises what happens at the transition point in TiSe2-xSx, which is expected for x close to 1. Here we report the growth and characterization of TiSeS single crystals and the study of the electronic structure using density functional theory (DFT) and angle-resolved photoemission (ARPES). We show that TiSeS single crystals have the same morphology as TiSe2. Transport measurements reveal a metallic state, no evidence of CDW was found. DFT calculations suggest that the electronic band structure in TiSeS is similar to that of TiSe2, but the electron and hole pockets in TiSeS are much smaller. The ARPES results are in good agreement with the calculations.
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