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Vibrational modes of a simple-cubic layered superlattice

Title
Vibrational modes of a simple-cubic layered superlattice
Authors
Moh H.J.Zhang H.I.Lee K.H.
Ewha Authors
모혜정
SCOPUS Author ID
모혜정scopus
Issue Date
1985
Journal Title
Journal of Physics C: Solid State Physics
ISSN
0022-3719JCR Link
Citation
vol. 18, no. 26, pp. L777 - L781
Indexed
SCOPUS scopus
Abstract
The matrix reduction method developed in an earlier paper is recast in a form useful for the study of layered superlattice structure. In particular, a rather general theorem relating the eigenvalues of a superlattice with those of the component lattice is proved for the model system of layered structure. Its most interesting feature is that the vibrational frequencies of the component lattice remain as those of the superlattice, consisting of repeated components, independent of the coupling strength between adjacent components. This analytical result is confirmed numerically by a series of frequency computations for the layered structures of type AB, ABAB and ABABAB, carried out without invoking the theorem. © 1985 The Institute of Physics.
DOI
10.1088/0022-3719/18/26/002
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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