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Cited by 76Topological Materials and PhenomenaAdvanced Condensed Matter PhysicsPhysics of Superconductivity and Magnetism

Magnetic-field induced multiple topological phases in pyrochlore iridates with Mott criticality

Open access
Ueda, Kentaro, Oh, Taekoo, Yang, Bohm-Jung, Kaneko, Ryoma, Fujioka, Jun, Nagaosa, Naoto, Tokura, Yoshinori·2017·Nature Communications
DOI 10.1038/ncomms15515PMC PMC5458080
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Abstract

Abstract The interplay between electron correlation and spin–orbit coupling in solids has been proven to be an abundant gold mine for emergent topological phases. Here we report the results of systematic magnetotransport study on bandwidth-controlled pyrochlore iridates R 2 Ir 2 O 7 near quantum metal-insulator transition (MIT). The application of a magnetic field along [001] crystallographic direction ( H //[001]) significantly decreases resistivity while producing a unique Hall response, which indicates the emergence of the novel semi-metallic state in the course of the magnetic transformation from all-in all-out (AIAO, 4/0) to 2-in 2-out (2/2) spin configuration. For H //[111] that favours 3-in 1-out (3/1) configuration, by contrast, the resistivity exhibits saturation at a relatively high value typical of a semimetal. The observed properties can be identified to reflect the emergence of multiple Weyl semimetal states with varying numbers of Weyl points and line nodes in respective spin configurations. With tuning effective bandwidth, all these states appear to concentrate around the quantum MIT region, which may open a promising venue for topological phenomena and functions.

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  • In mixed Nd-Pr materials, application of a [001] magnetic field decreases the resistivity and produces a unique Hall response.

    “It has also been shown in mixed Nd-Pr materials that the application of a [001] magnetic field decreases the resistivity and produces a unique Hall response and for field parallel to [111] the resistivity exhibits saturation at a relatively high value typical of a semimetal (Ueda et al. , 2017).”

    From Weyl and Dirac semimetals in three-dimensional solids (2018) · cites this paper as Ueda et al., 2017

  • In mixed Nd-Pr materials, for field parallel to [111], the resistivity exhibits saturation at a relatively high value typical of a semimetal.

    “It has also been shown in mixed Nd-Pr materials that the application of a [001] magnetic field decreases the resistivity and produces a unique Hall response and for field parallel to [111] the resistivity exhibits saturation at a relatively high value typical of a semimetal (Ueda et al. , 2017).”

    From Weyl and Dirac semimetals in three-dimensional solids (2018) · cites this paper as Ueda et al., 2017

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Research works printed but not linked: 29

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Cited by

Sorted by citations

  • Weyl and Dirac semimetals in three-dimensional solids

    Armitage, N. P., Mele, E. J., & Vishwanath, A. (2018) · Reviews of Modern Physics · doi:10.1103/revmodphys.90.015001 · Cited by 4,528 · see citing works

    “It has also been shown in mixed Nd-Pr materials that the application of a [001] magnetic field decreases the resistivity and produces a unique Hall response and for field parallel to [111] the resistivity exhibits saturation at a relatively high value typical of a semimetal (Ueda et al., 2017).”
    Background

  • Weyl and Dirac Semimetals in Three Dimensional Solids

    Armitage, N. P., Mele, E. J., & Vishwanath, A. (2017) · arXiv

    “It has also been shown in mixed Nd-Pr materials that the application of a [001] magnetic field decreases the resistivity and produces a unique Hall response and for field parallel to [111] the resistivity exhibits saturation at a relatively high value typical of a semimetal (Ueda et al., 2017).”
    Background

Authors
Ueda, K., Oh, T., Yang, B.-J., Kaneko, R., Fujioka, J., Nagaosa, N., & Tokura, Y.
Affiliations
  • The University of Tokyo (JP)
  • Seoul National University (KR)
  • Japan Science and Technology Agency (JP)
  • RIKEN Center for Emergent Matter Science (JP)
Corresponding author
Ueda, Kentaro
ORCID
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2017-05-24
Volume
8
Issue
1
Pages
15515-15515
ISSN
2041-1723 (ISSN-L)
DOI
10.1038/ncomms15515
PMC
PMC5458080
OpenAlex
W2617539703
Cited by
76
References
3
Citations by year
2026: 3 · 2025: 8 · 2024: 11 · 2023: 9 · 2022: 9 · 2021: 15 · 2020: 10 · 2019: 2 · 2018: 9
FWCI
2.82
Type
journal article
Language
en
Open access
Licence
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Strong
  • National Research Foundation
  • Seoul National University (IBS-R009-D1)
  • National Research Foundation of Korea (IBS-R009-D1, 0426-20150011)
  • Council for Science and Technology Policy
  • Japan Society for the Promotion of Science (16H00981, 26103006, 80609488, 24224009)
Topics
  • 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
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Physics of Superconductivity and Magnetism
Keywords
pyrochlore iridates, Weyl semimetals, magnetotransport, Hall response, spin-orbit coupling, electron correlation, semimetallic state

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