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

Jiaming He; Yiran Zhang; Libin Wen; Yusen Yang; Jinyu Liu; Yueshen Wu; Hailong Lian; Hui Xing; Shun Wang; Zhiqiang Mao; Ying Liu

doi:10.1063/1.4990801

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

Jiaming He, Yiran Zhang, Libin Wen, Yusen Yang, Jinyu Liu, Yueshen Wu, Hailong Lian, Hui Xing, Shun Wang, Zhiqiang Mao, Ying Liu

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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.

Original language	English (US)
Article number	052405
Journal	Applied Physics Letters
Volume	111
Issue number	5
DOIs	https://doi.org/10.1063/1.4990801
State	Published - Jul 31 2017

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4990801

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@article{185bb7b0b6634fecaca35bacdc4e1e8b,

title = "Band dependence of charge density wave in quasi-one-dimensional Ta2NiSe7 probed by orbital magnetoresistance",

abstract = "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.",

author = "Jiaming He and Yiran Zhang and Libin Wen and Yusen Yang and Jinyu Liu and Yueshen Wu and Hailong Lian and Hui Xing and Shun Wang and Zhiqiang Mao and Ying Liu",

note = "Funding Information: The work at SJTU was supported by MOST (Grant No. 2015CB921104) and NSFC (Grant Nos. 91421304 and 11474198), at Penn State by NSF (Grant No. EFMA1433378), and at Tulane supported by the U.S. Department of Energy under EPSCoR Grant No. DE-SC0012432 with additional support from the Louisiana Board of Regents (support for a graduate student, materials, travel to NHMFL).",

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doi = "10.1063/1.4990801",

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Band dependence of charge density wave in quasi-one-dimensional Ta₂NiSe₇ probed by orbital magnetoresistance. / He, Jiaming; Zhang, Yiran; Wen, Libin; Yang, Yusen; Liu, Jinyu; Wu, Yueshen; Lian, Hailong; Xing, Hui; Wang, Shun; Mao, Zhiqiang ; Liu, Ying.

In: Applied Physics Letters, Vol. 111, No. 5, 052405, 31.07.2017.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Band dependence of charge density wave in quasi-one-dimensional Ta2NiSe7 probed by orbital magnetoresistance

AU - He, Jiaming

AU - Zhang, Yiran

AU - Wen, Libin

AU - Yang, Yusen

AU - Liu, Jinyu

AU - Wu, Yueshen

AU - Lian, Hailong

AU - Xing, Hui

AU - Wang, Shun

AU - Mao, Zhiqiang

AU - Liu, Ying

N1 - Funding Information: The work at SJTU was supported by MOST (Grant No. 2015CB921104) and NSFC (Grant Nos. 91421304 and 11474198), at Penn State by NSF (Grant No. EFMA1433378), and at Tulane supported by the U.S. Department of Energy under EPSCoR Grant No. DE-SC0012432 with additional support from the Louisiana Board of Regents (support for a graduate student, materials, travel to NHMFL).

PY - 2017/7/31

Y1 - 2017/7/31

N2 - 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.

AB - 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.

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