Charge modulation and structural transformation in TaTe2 studied by scanning tunneling microscopy/spectroscopy

被引：33

作者：

Feng, Jiagui ^{[1
]}

Tan, Andrew ^{[1
]}

Wagner, Sean ^{[1
]}

Liu, Jinyu ^{[2
]}

Mao, Zhiqiang ^{[2
]}

Ke, Xianglin ^{[1
]}

Zhang, Pengpeng ^{[1
]}

机构：

[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[2] Tulane Univ, Dept Phys & Engn Phys, New Orleans, LA 70118 USA

来源：

APPLIED PHYSICS LETTERS | 2016年 / 109卷 / 02期

基金：

美国国家科学基金会;

关键词：

TRANSITION-METAL DICHALCOGENIDES; DENSITY WAVES; BAND-STRUCTURE; SUPERCONDUCTIVITY; SURFACE; IRTE2; DITELLURIDE; TEMPERATURE; STATE;

D O I：

10.1063/1.4958616

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We show that the (3 x 1) stripe structure observed in TaTe2 at room temperature arises from the formation of Ta4+-Ta4+ dimer chains along with a separate chain of Ta3+. More importantly, we reveal an intriguing lattice distortion and charge modulation at low temperature, which suggests an interplay and competition between the triple-axis (3 x 3) charge density wave-like modulation and the single-axis (3 x 1) stripe configuration. This work highlights the importance of TaTe2 as an alternative platform with rich structural and electrical phases to explore charge-lattice coupling. Published by AIP Publishing.

引用

页数：5

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