Electronic structure of solids with competing periodic potentials
When electrons are subject to a potential with two incommensurate periods, translational invariance is lost, and no periodic band structure is expected. However, model calculations based on nearly free one-dimensional electrons and experimental results from high-resolution photoemission spectroscopy on a quasi-one-dimensional material do show dispersing band states with signatures of both periodicities. Apparent band structures are generated by the nonuniform distribution of electronic spectral weight over the complex eigenvalue spectrum.
Univ Bayreuth, D-95440 Bayreuth, Germany. Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland. Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA. Univ Wisconsin, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA. Voit, J, Univ Bayreuth, POB 101251, D-95440 Bayreuth, Germany.
ISI Document Delivery No.: 365HN
Record created on 2006-10-03, modified on 2016-08-08