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

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4958616· OSTI ID:1467851
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  1. Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
  2. Tulane Univ., New Orleans, LA (United States). Dept. of Physics and Engineering Physics

Here, 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.

Research Organization:
Michigan State Univ., East Lansing, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
SC0006400; DMR-1410417; SC0012432
OSTI ID:
1467851
Alternate ID(s):
OSTI ID: 1261219
Journal Information:
Applied Physics Letters, Vol. 109, Issue 2; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (1)

Origin of the structural phase transition in single-crystal TaT e 2 journal December 2018