Direct evidence for hidden one-dimensional Fermi surface of hexagonal $K_{0.25}WO_3$

Raj, S and Sato, T and Souma, S and Takahashi, T and Sarma, DD and Mahadevan, Priya and Campuzano, JC and Greenblat, M and McCarroll, WH (2008) Direct evidence for hidden one-dimensional Fermi surface of hexagonal $K_{0.25}WO_3$. In: Physical Review B, 77 (24). 245120-1-245220-5.

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Abstract

The electronic structure of hexagonal potassium tungsten bronze $K_{0.25}WO_3$ 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:	Journal Article
Publication:	Physical Review B
Publisher:	American Physical Society
Additional Information:	Copyright of this article belongs to American Physical Society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	01 Aug 2008
Last Modified:	19 Sep 2010 04:48
URI:	http://eprints.iisc.ac.in/id/eprint/15340

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