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.
Keywords: charge-density-waves ; Peierls transition ; ARPES ; CHARGE-DENSITY-WAVE ; ELECTRONIC-STRUCTURE ; LUTTINGER LIQUID ; PHOTOEMISSION ; FLUCTUATIONS ; (TASE4)(2)I ; SPIN ; SEPARATION ; SOLIDS ; GAS ; CHARGE-DENSITY-WAVE
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
Record created on 2006-10-03, modified on 2016-08-08