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

Raj, S. ; Sato, T. ; Souma, S. ; Takahashi, T. ; Sarma, D. D. ; Mahadevan, Priya ; Campuzano, J. C. ; Greenblatt, M. ; McCarroll, W. H. (2008) Direct evidence for hidden one-dimensional Fermi surface of hexagonal K0.25WO3 Physical Review B: Condensed Matter and Materials Physics, 77 (24). 245120_1-245120_5. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v77/i24/e245120

Related URL: http://dx.doi.org/10.1103/PhysRevB.77.245120

Abstract

The electronic structure of hexagonal potassium tungsten bronze K0.25WO3 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.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:46436
Deposited On:04 Jul 2011 12:10
Last Modified:04 Jul 2011 12:10

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