The observation of gapped quasiparticles near the metal-insulator transition in Nax CoO2

Y. Xia, D. Qian, D. Hsieh, L. Wray, M. Z. Hasan, L. Viciu, R. J. Cava

    Research output: Contribution to journalArticle

    Abstract

    Utilizing high-resolution photoemission spectroscopy (ARPES) with fine-tuned polarization selection we present a systematic study of the insulating cobaltates. A single-particle gap opening is observed, suggesting an anisotropic particle-hole instability is present due to the material's unique topology. Unlike conventional density waves, charge stripes or band insulators, the onset of the gap depends on the quasiparticle's quantum coherence, which occurs well below the symmetry breaking temperature of the crystal.

    Original languageEnglish (US)
    Pages (from-to)2986-2988
    Number of pages3
    JournalJournal of Physics and Chemistry of Solids
    Volume69
    Issue number12
    DOIs
    StatePublished - Dec 2008

    Fingerprint

    Charge density waves
    Metal insulator transition
    Crystal symmetry
    Photoelectron spectroscopy
    Topology
    insulators
    Polarization
    Crystals
    metals
    broken symmetry
    photoelectric emission
    topology
    Temperature
    high resolution
    polarization
    spectroscopy
    crystals
    temperature

    Keywords

    • C. Photoelectron spectroscopy
    • D. Fermi surface
    • D. Spin-density waves

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Chemistry(all)
    • Materials Science(all)

    Cite this

    The observation of gapped quasiparticles near the metal-insulator transition in Nax CoO2 . / Xia, Y.; Qian, D.; Hsieh, D.; Wray, L.; Hasan, M. Z.; Viciu, L.; Cava, R. J.

    In: Journal of Physics and Chemistry of Solids, Vol. 69, No. 12, 12.2008, p. 2986-2988.

    Research output: Contribution to journalArticle

    Xia, Y. ; Qian, D. ; Hsieh, D. ; Wray, L. ; Hasan, M. Z. ; Viciu, L. ; Cava, R. J. / The observation of gapped quasiparticles near the metal-insulator transition in Nax CoO2 . In: Journal of Physics and Chemistry of Solids. 2008 ; Vol. 69, No. 12. pp. 2986-2988.
    @article{8d63a79dbde746858e9bc4b87fe06912,
    title = "The observation of gapped quasiparticles near the metal-insulator transition in Nax CoO2",
    abstract = "Utilizing high-resolution photoemission spectroscopy (ARPES) with fine-tuned polarization selection we present a systematic study of the insulating cobaltates. A single-particle gap opening is observed, suggesting an anisotropic particle-hole instability is present due to the material's unique topology. Unlike conventional density waves, charge stripes or band insulators, the onset of the gap depends on the quasiparticle's quantum coherence, which occurs well below the symmetry breaking temperature of the crystal.",
    keywords = "C. Photoelectron spectroscopy, D. Fermi surface, D. Spin-density waves",
    author = "Y. Xia and D. Qian and D. Hsieh and L. Wray and Hasan, {M. Z.} and L. Viciu and Cava, {R. J.}",
    year = "2008",
    month = "12",
    doi = "10.1016/j.jpcs.2008.06.110",
    language = "English (US)",
    volume = "69",
    pages = "2986--2988",
    journal = "Journal of Physics and Chemistry of Solids",
    issn = "0022-3697",
    publisher = "Elsevier Limited",
    number = "12",

    }

    TY - JOUR

    T1 - The observation of gapped quasiparticles near the metal-insulator transition in Nax CoO2

    AU - Xia, Y.

    AU - Qian, D.

    AU - Hsieh, D.

    AU - Wray, L.

    AU - Hasan, M. Z.

    AU - Viciu, L.

    AU - Cava, R. J.

    PY - 2008/12

    Y1 - 2008/12

    N2 - Utilizing high-resolution photoemission spectroscopy (ARPES) with fine-tuned polarization selection we present a systematic study of the insulating cobaltates. A single-particle gap opening is observed, suggesting an anisotropic particle-hole instability is present due to the material's unique topology. Unlike conventional density waves, charge stripes or band insulators, the onset of the gap depends on the quasiparticle's quantum coherence, which occurs well below the symmetry breaking temperature of the crystal.

    AB - Utilizing high-resolution photoemission spectroscopy (ARPES) with fine-tuned polarization selection we present a systematic study of the insulating cobaltates. A single-particle gap opening is observed, suggesting an anisotropic particle-hole instability is present due to the material's unique topology. Unlike conventional density waves, charge stripes or band insulators, the onset of the gap depends on the quasiparticle's quantum coherence, which occurs well below the symmetry breaking temperature of the crystal.

    KW - C. Photoelectron spectroscopy

    KW - D. Fermi surface

    KW - D. Spin-density waves

    UR - http://www.scopus.com/inward/record.url?scp=57049128969&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=57049128969&partnerID=8YFLogxK

    U2 - 10.1016/j.jpcs.2008.06.110

    DO - 10.1016/j.jpcs.2008.06.110

    M3 - Article

    AN - SCOPUS:57049128969

    VL - 69

    SP - 2986

    EP - 2988

    JO - Journal of Physics and Chemistry of Solids

    JF - Journal of Physics and Chemistry of Solids

    SN - 0022-3697

    IS - 12

    ER -