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Phys. Rev. Lett. 55, 1768 - 1770 (1985)

Quasiperiodic GaAs-AlAs Heterostructures

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R. Merlin, K. Bajema, and Roy Clarke
Department of Physics, The University of Michigan, Ann Arbor, Michigan 48109

F. -Y. Juang and P. K. Bhattacharya
Solid State Electronics Laboratory, Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, Michigan 48109

Received 28 June 1985

We report the first realization of a quasiperiodic (incommensurate) superlattice. The sample, grown by molecular-beam epitaxy, consists of alternating layers of GaAs and AlAs to form a Fibonacci sequence in which the ratio of incommensurate periods is equal to the golden mean τ. X-ray and Raman scattering measurements are presented that reveal some of the unique properties of these novel structures.


©1985 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.55.1768
DOI: 10.1103/PhysRevLett.55.1768
PACS: 68.55.+b, 61.50.Em, 78.30.Gt, 78.70.Ck

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