The spectroscopic properties of 1D Peierls systems

We have studied by high resolution ARPES the spectroscopic properties of the prototype charge density wave system (TaSe4)(2)I and of the closely related insulating compound (NbSe4)(3)I. We observe features dispersing with the lattice periodicity, including commensurate (in (NbSe4)(3)I) and incommensurate (in (TaSe4)(2)I) superlattice shadow bands. The spectral lineshape is anomalous in the normal metallic state, and the intensity is strongly suppressed near the Fermi surface. In the insulating CDW state the linear extrapolation of the leading edge rather than the peak position identifies the gap energy scale. (C) 2001 Elsevier Science B.V; All rights reserved.


Published in:
Journal of Electron Spectroscopy and Related Phenomena, 114, 1, 653-657
Year:
2001
ISSN:
0368-2048
Keywords:
Note:
Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland. Univ Bayreuth, D-95440 Bayreuth, Germany. Univ Wisconsin, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA. Grioni, M, Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 417JW
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 Record created 2006-10-03, last modified 2018-03-18


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