Cited by 562D Materials and ApplicationsTopological Materials and PhenomenaAdvanced Condensed Matter Physics

MoTe2: An uncompensated semimetal with extremely large magnetoresistance

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Thirupathaiah, S., Jha, Rajveer, Pal, Banabir, Matias, J. S., Das, P. Kumar, Sivakumar, P. K., Vobornik, I., Plumb, N. C. +3 more·2017·Physical Review B

Abstract

Transition-metal dichalcogenides (${\mathrm{WTe}}_{2}$ and ${\mathrm{MoTe}}_{2}$) have recently drawn much attention, because of the nonsaturating extremely large magnetoresistance (XMR) observed in these compounds in addition to the predictions of likely type-II Weyl semimetals. Contrary to the topological insulators or Dirac semimetals where XMR is linearly dependent on the field, in ${\mathrm{WTe}}_{2}$ and ${\mathrm{MoTe}}_{2}$ the XMR is nonlinearly dependent on the field, suggesting an entirely different mechanism. Electron-hole compensation has been proposed as a mechanism of this nonsaturating XMR in ${\mathrm{WTe}}_{2}$, while it is yet to be clear in the case of ${\mathrm{MoTe}}_{2}$ which has an identical crystal structure of ${\mathrm{WTe}}_{2}$ at low temperatures. In this Rapid Communication, we report low-energy electronic structure and Fermi surface topology of ${\mathrm{MoTe}}_{2}$ using angle-resolved photoemission spectrometry (ARPES) technique and first-principles calculations, and compare them with that of ${\mathrm{WTe}}_{2}$ to understand the mechanism of XMR. Our measurements demonstrate that ${\mathrm{MoTe}}_{2}$ is an uncompensated semimetal, contrary to ${\mathrm{WTe}}_{2}$ in which compensated electron-hole pockets have been identified, ruling out the applicability of charge compensation theory for the nonsaturating XMR in ${\mathrm{MoTe}}_{2}$. In this context, we also discuss the applicability of other existing conjectures on the XMR of these compounds.

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  1. [16]16. J. Feng, Y. Pang, D. Wu, Z. Wang, H. Weng, J. Li, X. Dai, Z. Fang, Y. Shi, and L. Lu, Large linear magnetoresistance in Dirac semimetal Cd 3 As 2 with Fermi surfaces close to the Dirac points, Phys. Rev. B 92, 081306 (2015).
  2. [19]19. I. Pletikosić, M. N. Ali, A. V. Fedorov, R. J. Cava, and T. Valla, Electronic Structure Basis for the Extraordinary Magnetoresis- tance in WTe 2 , Phys. Rev. Lett. 113, 216601 (2014).
  3. [25]25. A. Tamai, Q. S. Wu, I. Cucchi, F. Y. Bruno, S. Riccò, T. K. Kim, M. Hoesch, C. Barreteau, E. Giannini, C. Besnard, A. A. Soluyanov, and F. Baumberger, Fermi Arcs and Their Topological Character in the Candidate Type-II Weyl Semimetal MoTe 2 , Phys. Rev. X 6, 031021 (2016).
  4. [30]30. See Supplemental Material at http://link.aps.org/supplemental/ 10.1103/PhysRevB.95.241105 for the details on carrier density estimate, crystal structure information and for the additional data from ARPES and DFT calculations on MoTe 2 .

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Authors
Thirupathaiah, S., Jha, R., Pal, B., Matias, J. S., Das, P. K., Sivakumar, P. K., Vobornik, I., Plumb, N. C., Shi, M., Ribeiro, R. A., & Sarma, D. D.
Affiliations
  • Indian Institute of Science Bangalore (IN)
  • Universidade Federal do ABC (BR)
  • The Abdus Salam International Centre for Theoretical Physics (ICTP) (IT)
  • AREA Science Park (IT)
  • Paul Scherrer Institute (CH)
Venue
Physical Review B
Published
2017-06-08
Volume
95
Issue
24
ISSN
  • 2469-9950 (ISSN-L)
  • 2469-9969
OpenAlex
W2623663523
Cited by
56
References
40
Citations by year
2026: 2 · 2025: 4 · 2024: 5 · 2023: 2 · 2022: 7 · 2021: 9 · 2020: 9 · 2019: 6 · 2018: 6 · 2017: 6
FWCI
3.12
Type
journal article
Language
en
Open access
Locations
  • Physical review. B./Physical review. B (publishedVersion)
  • NOT FOUND REPOSITORY (Indian Institute of Science Bangalore) (acceptedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • DORA PSI (Paul Scherrer Institute) (submittedVersion, other-oa)
  • arXiv (Cornell University)
Funders
  • Department of Science and Technology, Ministry of Science and Technology (IFA14 PH-86, SR/NM/Z-07/2015)
  • Jawaharlal Nehru Centre for Advanced Scientific Research
  • Abdus Salam International Centre for Theoretical Physics
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (2011/19924-2)
  • Ministero dell'Istruzione, dell'Università e della Ricerca
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
Keywords
MoTe2, WTe2, transition metal dichalcogenides, non-saturating magnetoresistance, electron-hole compensation, Fermi surface topology, low-energy electronic structure, type-II Weyl semimetal, angle-resolved photoemission

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