B K Ridley 2002 J. Phys.: Condens. Matter 14 3469 doi:10.1088/0953-8984/14/13/306
B K Ridley
Show affiliationsA superlattice composed of materials exhibiting spontaneous electrical polarization has strong electric fields in both wells and barriers. Electrons in the wells are confined in deep triangular potentials whereas polar-optical phonons are confined in square wells. The electron–phonon interaction therefore presents novel features, and these are explored here in the system Al1−xInxN/GaN assumed to be lattice-matched. The dielectric-continuum model is used to calculate bulk alloy and interface mode properties, and threshold scattering rates are estimated. The reduced role of phonon symmetry is pointed out.
63.22.-m Phonons or vibrational states in low-dimensional structures and nanoscale materials
Condensed matter: electrical, magnetic and optical
Issue 13 (8 April 2002)
Received 16 August 2001, in final form 14 September 2001
Published 22 March 2002
B K Ridley 2002 J. Phys.: Condens. Matter 14 3469
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