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

Jiagui Feng, Andrew Tan, Sean Wagner, Jinyu Liu, Zhiqiang Mao, Xianglin Ke, Pengpeng Zhang

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

We show that the (3 × 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 × 3) charge density wave-like modulation and the single-axis (3 × 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.

Original languageEnglish (US)
Article number021901
JournalApplied Physics Letters
Volume109
Issue number2
DOIs
StatePublished - Jul 11 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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