Electron effective mass and nonparabolicity inGa0.47In0.53As/InP quantum wells

C. Wetzel, R. Winkler, M. Drechsler, B. K. Meyer, U. Rössler, J. Scriba, J. P. Kotthaus, V. Härle, F. Scholz
1996 Physical Review B (Condensed Matter)  
The in-plane effective electron mass (m ʈ ) in narrow Ga 0.47 In 0.53 As/InP quantum wells is strongly dependent on the quantization energy. Cyclotron resonance in a series of quantum wells with well widths down to 15 Å reveals a mass enhancement of up to 50% (m ʈ ϭ0.065m 0 ) over the bulk value of Ga 0.47 In 0.53 As. This effect is caused by the nonparabolicity of the conduction band and wave function penetration into the barrier material. Our experimental findings are in good agreement with
more » ... od agreement with calculations performed within the framework of k-p theory. We obtain an easy-to-use relation between the mass and the quantization energy m 0 /m ʈ (⑀)ϭ(1Ϫ1.96⑀/eV)/0.044.
doi:10.1103/physrevb.53.1038 pmid:9983549 fatcat:btoyrwn3xnc3rbbfuyng4zbtai