Magnetotransport and Magnetooptics of InAs_{1-x}Sb_{x} and Heterojunctions Combinations Formed Between InAs and GaSb, AlSb Or InAs_{1 -x}Sb_{x}

• Authors: R. Stradling
• Languages of publication: EN

Abstracts

EN

Cyclotron resonance and interband measurements are reported in magnetic fields up to 160 T for InAs/InAs_{1-x}Sb_{x} superlattices, one of which is a "self-organised" or "natural" superlattice, and InAs_{1-x}Sb_{x} epilayers. The samples were grown by MBE at temperatures between 370°C to 500°C. No dependence of the band gap, effective masses or g-values on the growth temperature was detected. Anomalous tilt behaviour was observed for the superlattices. Inversion asymmetry induced spin-splitting of the subbands in gated InAs quantum wells is investigated by means of the Shubnikov-de Haas effect and cyclotron resonance. The non-parabolicity was well fitted by Kane theory, although the measured values of effective mass were substantially higher than predictions. Infrared life time measurements at wavelengths between 6 and 85 microns are undertaken with free electron lasers on InAs/InAs_{1-x}Sb_{x} superlattices and InAs/AlSb quantum wells. Suppression of the Auger recombination times is demonstrated with the superlattices.

Keywords

EN

72.20.My; 76.40.+b; 78.20.Ls

Discipline

• 78.20.Ls: Magneto-optical effects(for magneto-optical devices, see 85.70.Sq)
• 72.20.My: Galvanomagnetic and other magnetotransport effects
• 76.40.+b: Diamagnetic and cyclotron resonances

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 92
• Issue: 5
• Pages: 851-865

Dates

published

1997-11

Contributors

author

R. Stradling

• Blackett Laboratory, Imperial College of Science, Technology & Medicine, London SW7 2BZ, UK

Identifiers

DOI

10.12693/APhysPolA.92.851