Carrier-concentration-dependent polaron cyclotron resonance in GaAs heterostructures

F. M. Peeters; X.-G. Wu; J. T. Devreese; C. J. G. M. Langerak; J. Singleton; D. J. Barnes; R. J. Nicholas

doi:10.1103/PhysRevB.45.4296

Carrier-concentration-dependent polaron cyclotron resonance in GaAs heterostructures

F. M. Peeters, X.-G. Wu, J. T. Devreese, C. J. G. M. Langerak, J. Singleton, D. J. Barnes, and R. J. Nicholas

Phys. Rev. B 45, 4296 – Published 15 February 1992

Abstract

A detailed theoretical analysis is made of the experimental results on the polaron cyclotron-resonance mass in GaAs/ ${Al}_{x}$ ${Ga}_{1 - x}$ As heterostructures of Langerak et al. [Phys. Rev. B 38, 13 133 (1988)], with emphasis on the electron-density dependence. We found that (1) coupling to bulk GaAs LO phonons is responsible for the observed resonant polaron cyclotron-resonance effects, and (2) the occupation effect with inclusion of spin splitting is mainly responsible for the electron-density dependence of the polaron-mass renormalization.

Received 1 May 1991

DOI:https://doi.org/10.1103/PhysRevB.45.4296

Authors & Affiliations

F. M. Peeters

Universiteit Antwerpen (UIA), Departement Natuurkunde, B-2610 Antwerpen, Belgium

X.-G. Wu

Universiteit Antwerpen (UIA), Departement Natuurkunde, B-2610 Antwerpen, Belgium
Department of Physics, Ohio University, Athens, Ohio 45701-2979

J. T. Devreese

Universiteit Antwerpen (UIA), Departement Natuurkunde, B-2610 Antwerpen, Belgium,
University of Antwerp (RUCA), B-2020 Antwerpen, Belgium,
University of Technology, NL-5600 MB Eindhoven, The Netherlands

C. J. G. M. Langerak

High Field Magnetic Laboratory and Research Institute for Materials, University of Nijmegen, Toernooiveld, NL-6525 Nijmegen, The Netherlands
Nottingham University, University Park, Nottingham NG7 2RD, United Kingdom

J. Singleton

High Field Magnetic Laboratory and Research Institute for Materials, University of Nijmegen, Toernooiveld, NL-6525 ED Nijmegen, The Netherlands
Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom

D. J. Barnes