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Phonons in superlattices: II. A microscopic approach

Y Liu, J C Inkson

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Abstract

For pt.I see ibid., vol.4, p.138 (1989). The phonon modes are calculated for superlattices over the whole surface Brillouin zone for both GaSb-InAs and GaAs-AlAs systems. Three distinct types of phonon modes are identified, characterised by their overlap with the bulk phonon bands in the constituent media, including purely interface modes for the GaSb-InAs system. Off the Brillouin zone centre, mode mixing is seen.

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For pt.I see ibid., vol.4, p.138 (1989). The phonon modes are calculated for superlattices over the whole surface Brillouin zone for both GaSb-InAs and GaAs-AlAs systems. Three distinct types of phonon modes are identified, characterised by their overlap with the bulk phonon bands in the constituent media, including purely interface modes for the GaSb-InAs system. Off the Brillouin zone centre, mode mixing is seen.

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Available abstract

For pt.I see ibid., vol.4, p.138 (1989). The phonon modes are calculated for superlattices over the whole surface Brillouin zone for both GaSb-InAs and GaAs-AlAs systems. Three distinct types of phonon modes are identified, characterised by their overlap with the bulk phonon bands in the constituent media, including purely interface modes for the GaSb-InAs system. Off the Brillouin zone centre, mode mixing is seen.

Key concepts: Brillouin zone, Phonon, Superlattice, Condensed matter physics, Brillouin scattering, Materials science, Physics, Optics

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