Calculation of Shockley and Tamm states for a one-dimensional lattice using Green's-function theory
- 15 February 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 9 (4), 1857-1860
- https://doi.org/10.1103/physrevb.9.1857
Abstract
The surface-state energy levels associated with a semi-infinite linear chain of atoms with two atomic orbitals have been investigated using the Green's-function formalism of Kalstein and Soven. We have made a systematic study of the dependence of the energies of both Shockley and Tamm surface states and their existence condition on parameters such as the hopping integral and the surface-potential perturbation.Keywords
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