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  Observation of topological surface states and strong electron/hole imbalance in extreme magnetoresistance compound LaBi

Jiang, J., Schröter, N. B. M., Wu, S.-C., Kumar, N., Shekhar, C., Peng, H., et al. (2018). Observation of topological surface states and strong electron/hole imbalance in extreme magnetoresistance compound LaBi. Physical Review Materials, 2(2): 024201, pp. 1-5. doi:10.1103/PhysRevMaterials.2.024201.

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 Urheber:
Jiang, J.1, Autor
Schröter, N. B. M.1, Autor
Wu, S.-C.2, Autor           
Kumar, N.2, Autor           
Shekhar, C.3, Autor           
Peng, H.1, Autor
Xu, X.1, Autor
Chen, C.1, Autor
Yang, H. F.1, Autor
Hwang, C.-C.1, Autor
Mo, S.-K.1, Autor
Felser, C.4, Autor           
Yan, B. H.5, Autor           
Liu, Z. K.1, Autor
Yang, L. X.1, Autor
Chen, Y. L.1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863428              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
5Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863427              

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 Zusammenfassung: The recent discovery of the extreme magnetoresistance (XMR) in the nonmagnetic rare-earth monopnictides LaX (X = P, As, Sb, Bi,), a recently proposed new topological semimetal family, has inspired intensive research effort in the exploration of the correlation between the XMR and their electronic structures. In this work, using angle-resolved photoemission spectroscopy to investigate the three-dimensional band structure of LaBi, we unraveled its topologically nontrivial nature with the observation of multiple topological surface Dirac fermions, as supported by our ab initio calculations. Furthermore, we observed substantial imbalance between the volume of electron and hole pockets, which rules out the electron-hole compensation as the primary cause of the XMR in LaBi.

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Sprache(n): eng - English
 Datum: 2018-02-062018-02-06
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1103/PhysRevMaterials.2.024201
 Art des Abschluß: -

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Titel: Physical Review Materials
  Kurztitel : Phys. Rev. Mat.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: College Park, MD : American Physical Society
Seiten: - Band / Heft: 2 (2) Artikelnummer: 024201 Start- / Endseite: 1 - 5 Identifikator: ISSN: 2475-9953
CoNE: https://pure.mpg.de/cone/journals/resource/2475-9953