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Title: Band dependence of charge density wave in quasi-one-dimensional Ta2NiSe7 probed by orbital magnetoresistance

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4990801· OSTI ID:1473866
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  1. Shanghai Jiao Tong Univ. (China)
  2. Tulane Univ., New Orleans, LA (United States)
  3. Shanghai Jiao Tong Univ. (China); Pennsylvania State Univ., University Park, PA (United States); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)

Ta2NiSe7 is a quasi-one-dimensional (quasi-1D) transition-metal chalcogenide with Ta and Ni chain structures. An incommensurate charge-density wave (CDW) in this quasi-1D structure was well studied previously using tunnelling spectrum, X-ray, and electron diffraction, whereas its transport property and the relation to the underlying electronic states remain to be explored. Here, we report our results of the magnetoresistance (MR) on Ta2NiSe7. A breakdown of Kohler's rule is found upon entering the CDW state. Concomitantly, a clear change in curvature in the field dependence of MR is observed. We show that the curvature change is well described by the two-band orbital MR, with the hole density being strongly suppressed in the CDW state, indicating that the p orbitals from Se atoms dominate the change in transport through CDW transition.

Research Organization:
Louisiana State Univ., Baton Rouge, LA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012432
OSTI ID:
1473866
Alternate ID(s):
OSTI ID: 1373622
Journal Information:
Applied Physics Letters, Vol. 111, Issue 5; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Cited By (2)