Direct evidence for hidden one-dimensional Fermi surface of hexagonal K0.25 WO3

S. Raj; T. Sato; S. Souma; T. Takahashi; D. D. Sarma; Priya Mahadevan; J. C. Campuzano; M. Greenblatt; W. H. McCarroll

doi:10.1103/PhysRevB.77.245120

Direct evidence for hidden one-dimensional Fermi surface of hexagonal K0.25 WO3

S. Raj, T. Sato, S. Souma, T. Takahashi, D. D. Sarma, Priya Mahadevan, J. C. Campuzano, M. Greenblatt, W. H. McCarroll

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The electronic structure of hexagonal potassium tungsten bronze K0.25 WO3 has been investigated by high-resolution angle-resolved photoemission spectroscopy (ARPES). The experimentally determined band structure resolves the long-standing puzzles concerning the anomalous transport properties in this hexagonal bronze. We find that the ARPES-derived Fermi surface is the consequence of hidden one-dimensional (1D) bands, in good agreement with the calculated Fermi surface. These results indicate that the high-temperature anomaly in the electrical resistivity originates in the possible charge-density-wave formation associated with the hidden 1D Fermi surfaces.

Original language	English
Article number	245120
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.77.245120
Publication status	Published - 2008 Jun 18

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.77.245120

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Direct evidence for hidden one-dimensional Fermi surface of hexagonal K0.25 WO3. / Raj, S.; Sato, T.; Souma, S.; Takahashi, T.; Sarma, D. D.; Mahadevan, Priya; Campuzano, J. C.; Greenblatt, M.; McCarroll, W. H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 77, No. 24, 245120, 18.06.2008.

Research output: Contribution to journal › Article › peer-review

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AU - Sato, T.

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AU - Sarma, D. D.

AU - Mahadevan, Priya

AU - Campuzano, J. C.

AU - Greenblatt, M.

AU - McCarroll, W. H.

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AB - The electronic structure of hexagonal potassium tungsten bronze K0.25 WO3 has been investigated by high-resolution angle-resolved photoemission spectroscopy (ARPES). The experimentally determined band structure resolves the long-standing puzzles concerning the anomalous transport properties in this hexagonal bronze. We find that the ARPES-derived Fermi surface is the consequence of hidden one-dimensional (1D) bands, in good agreement with the calculated Fermi surface. These results indicate that the high-temperature anomaly in the electrical resistivity originates in the possible charge-density-wave formation associated with the hidden 1D Fermi surfaces.

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Direct evidence for hidden one-dimensional Fermi surface of hexagonal K0.25 WO3

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