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  Changes of Fermi surface topology due to the rhombohedral distortion in SnTe

O'Neill, C. D., Clark, O. J., Keen, H. D. J., Mazzola, F., Marković, I., Sokolov, D. A., et al. (2020). Changes of Fermi surface topology due to the rhombohedral distortion in SnTe. Physical Review B, 102(15): 155132, pp. 1-7. doi:10.1103/PhysRevB.102.155132.

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 Creators:
O'Neill, Christopher D.1, Author
Clark, Oliver J.1, Author
Keen, Harry D. J.1, Author
Mazzola, Federico1, Author
Marković, Igor2, Author              
Sokolov, Dmitry A.2, Author              
Malekos, Andreas1, Author
King, Phil D. C.1, Author
Hermann, Andreas1, Author
Huxley, Andrew D.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: Stoichiometric SnTe is theoretically a small gap semiconductor that undergoes a ferroelectric distortion on cooling. In reality however, crystals are always nonstoichiometric and metallic; the ferroelectric transition is therefore, more accurately described as a polar structural transition. Here, we study the Fermi surface using quantum oscillations as a function of pressure. We find the oscillation spectrum changes at high pressure due to the suppression of the polar transition and less than 10 kbars is sufficient to stabilize the undistorted cubic lattice, this is accompanied by a large decrease in the Hall and electrical resistivities. Combined with our density functional theory calculations and angle-resolved photoemission spectroscopy measurements, this suggests the Fermi surface L pockets have lower mobility than the tubular Fermi surfaces that connect them. Additionally, we find the unusual phenomenon of a linear magnetoresistance that exists irrespective of the distortion that we attribute to regions of the Fermi surface with high curvature.

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Language(s): eng - English
 Dates: 2020-10-212020-10-21
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevB.102.155132
 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: 102 (15) Sequence Number: 155132 Start / End Page: 1 - 7 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008