Electrodynamic response of the type-II Weyl semimetal YbMnBi2

doi:10.1103/PhysRevB.94.245101

Title: Electrodynamic response of the type-II Weyl semimetal ${YbMnBi}_{2}$

Abstract

Weyl fermions play a major role in quantum field theory but have been quite elusive as fundamental particles. These quasi-two-dimensional bismuth layers based materials were recently designed and provide an arena for studying the interplay between anisotropic Dirac fermions, magnetism, and structural changes, allowing the formation of Weyl fermions in condensed matter. We perform an optical investigation of YbMnBi ₂ , a representative type-II Weyl semimetal, and contrast its excitation spectrum with the optical response of the more conventional semimetal EuMnBi ₂ . This comparative study allows us to disentangle the optical fingerprints of type-II Weyl fermions, but also challenges the present theoretical understanding of their electrodynamic response.

Authors:

Chinotti, M. ^[1]; Pal, A. ^[1]; Ren, W. J. ^[2]; Petrovic, C. ^[3]; Degiorgi, L. ^[1]

ETH Zurich (Switzerland). Lab. for Solid State Physics
Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Chinese Academy of Sciences (CAS), Shenyang (China). Inst. of Metal Research and Shenyang National Lab. for Materials Science
Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.

Publication Date:: 2016-12-01

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1342653

Alternate Identifier(s):: OSTI ID: 1334208

Report Number(s):: BNL-113489-2017-JA
Journal ID: ISSN 2469-9950; PRBMDO; R&D Project: PM016; KC0201050; TRN: US1701187

Grant/Contract Number:: SC00112704; SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 94; Journal Issue: 24; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Chinotti, M., Pal, A., Ren, W. J., Petrovic, C., and Degiorgi, L. Electrodynamic response of the type-II Weyl semimetal YbMnBi2.  United States: N. p., 2016. 
        Web.  doi:10.1103/PhysRevB.94.245101.

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                    Chinotti, M., Pal, A., Ren, W. J., Petrovic, C., & Degiorgi, L. Electrodynamic response of the type-II Weyl semimetal YbMnBi2.  United States.  doi:10.1103/PhysRevB.94.245101.

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                    Chinotti, M., Pal, A., Ren, W. J., Petrovic, C., and Degiorgi, L. Thu .  
        "Electrodynamic response of the type-II Weyl semimetal YbMnBi2".  United States.  doi:10.1103/PhysRevB.94.245101.  https://www.osti.gov/servlets/purl/1342653.

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@article{osti_1342653,

  title        = {Electrodynamic response of the type-II Weyl semimetal YbMnBi2},

  author       = {Chinotti, M. and Pal, A. and Ren, W. J. and Petrovic, C. and Degiorgi, L.},

  abstractNote = {Weyl fermions play a major role in quantum field theory but have been quite elusive as fundamental particles. These quasi-two-dimensional bismuth layers based materials were recently designed and provide an arena for studying the interplay between anisotropic Dirac fermions, magnetism, and structural changes, allowing the formation of Weyl fermions in condensed matter. We perform an optical investigation of YbMnBi 2 , a representative type-II Weyl semimetal, and contrast its excitation spectrum with the optical response of the more conventional semimetal EuMnBi 2 . This comparative study allows us to disentangle the optical fingerprints of type-II Weyl fermions, but also challenges the present theoretical understanding of their electrodynamic response.},

  doi          = {10.1103/PhysRevB.94.245101},

  journal      = {Physical Review B},

  number       = 24,

  volume       = 94,

  place        = {United States},

  year         = {2016},

  month        = {12}

}

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DOI: 10.1103/PhysRevB.94.245101

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Works referenced in this record:

Colloquium: Topological insulators
journal, November 2010

Hasan, M. Z.; Kane, C. L.
Reviews of Modern Physics, Vol. 82, Issue 4, p. 3045-3067
DOI: 10.1103/RevModPhys.82.3045

Two-dimensional gas of massless Dirac fermions in graphene
journal, November 2005

Novoselov, K. S.; Geim, A. K.; Morozov, S. V.
Nature, Vol. 438, Issue 7065, p. 197-200
DOI: 10.1038/nature04233

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Title: Electrodynamic response of the type-II Weyl semimetal YbMnBi 2

Abstract

Citation Formats

Colloquium: Topological insulators journal, November 2010

Two-dimensional gas of massless Dirac fermions in graphene journal, November 2005

Title: Electrodynamic response of the type-II Weyl semimetal ${YbMnBi}_{2}$

Colloquium: Topological insulators
journal, November 2010

Two-dimensional gas of massless Dirac fermions in graphene
journal, November 2005