Publication: Comment on "Periodic wave functions and number of extended states in random dimer systems"
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1998-10-01
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American Physical Society
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Abstract
In a recent report, Huang, Wu, and Gong [Phys. Rev. B 55, 11018 (1997)] studied numerically the electronic properties of a random dimer model (RDM) and found extended periodic wave functions near the critical energies. We argue that there are no periodic wave functions in the RDM but close to the critical energies there exist periodic envelopes. These envelopes are given by the nondisordered properties of the system.
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© 1998 The American Physical Society.
Part of this work was made possible due to the project FDI-Chile (J.C.F. and M.H.).
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