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  Large nonsaturating magnetoresistance and pressure-induced phase transition in the layered semimetal HfTe2

Mangelsen, S., Naumov, P. G., Barkalov, O. I., Medvedev, S. A., Schnelle, W., Bobnar, M., et al. (2017). Large nonsaturating magnetoresistance and pressure-induced phase transition in the layered semimetal HfTe2. Physical Review B, 96(20): 205148, pp. 1-9. doi:10.1103/PhysRevB.96.205148.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-9C7F-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-9C9D-E
Genre: Journal Article

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 Creators:
Mangelsen, S.1, Author
Naumov, P. G.2, Author              
Barkalov, O. I.2, Author              
Medvedev, S. A.3, Author              
Schnelle, W.4, Author              
Bobnar, M.5, Author              
Mankovsky, S.1, Author
Polesya, S.1, Author
Naether, C.1, Author
Ebert, H.1, Author
Bensch, W.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Sergiy Medvediev, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863438              
4Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
5Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              

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 Abstract: Unusual physical properties like large magnetoresistance (MR) and superconductivity occurring in semimetals with Dirac or Weyl points are often linked to their topologically nontrivial band structures. However, there is an increasing number of reports on semimetals that show large MR in the absence of Dirac or Weyl points. Herein we report an experimental and theoretical study on the layered transition-metal dichalcogenide (TMDC) HfTe2 that shows a large MR of 1350% at T = 2 K and mu H-0 = 9 T in the absence of Dirac or Weyl points. Moreover, the structure and electrical resistivity under pressure reveal a unique structural transition. These results clearly distinguish HfTe2 from TMDCs like MoTe2 or WTe2 which both exhibit larger MR and are viewed as Weyl semimetals. HfTe2 is an appealing platform for future investigations on the interplay of particular band-structure features and their connection to emerging physical properties.

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Language(s): eng - English
 Dates: 2017-11-282017-11-28
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1103/PhysRevB.96.205148
 Degree: -

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 96 (20) Sequence Number: 205148 Start / End Page: 1 - 9 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008