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

doi:10.1063/1.4958616

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 journal › Article › peer-review

32 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 language	English (US)
Article number	021901
Journal	Applied Physics Letters
Volume	109
Issue number	2
DOIs	https://doi.org/10.1063/1.4958616
State	Published - Jul 11 2016

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4958616

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title = "Charge modulation and structural transformation in TaTe2 studied by scanning tunneling microscopy/spectroscopy",

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.",

author = "Jiagui Feng and Andrew Tan and Sean Wagner and Jinyu Liu and Zhiqiang Mao and Xianglin Ke and Pengpeng Zhang",

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T1 - Charge modulation and structural transformation in TaTe2 studied by scanning tunneling microscopy/spectroscopy

AU - Feng, Jiagui

AU - Tan, Andrew

AU - Wagner, Sean

AU - Liu, Jinyu

AU - Mao, Zhiqiang

AU - Ke, Xianglin

AU - Zhang, Pengpeng

PY - 2016/7/11

Y1 - 2016/7/11

N2 - 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.

AB - 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.

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

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