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.
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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
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