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Layer Perfection in Ultrathin InAS Quantum Wells in GaAs(001)



J A. Gupta, S P. Watkins, E D. Crozier, Joseph Woicik, D A. Harrison, D Jiang, I J. Pickering, B A. Karlin


X-ray diffraction (XRD), X-ray standing wave (XSW) and X-ray absorption fine structure (XAFS) measurements were used to assess the layer perfection and positions of 1 and 2 monolayer (ML) InAs quantum wells buried in GaAs(001). Photoluminescence (PL) spectroscopy was used to correlate the structural and optical properties of the films. Growth temperature effects were studied in a series of samples produced by metalorganic vapor phase epitaxy (MOVPE) between 400 and 600/C. The XSW coherent position of the In atoms decreases with increasing temperature in the 1 ML samples, and the optimal growth temperature is near 550/C, as evidenced by the coherent position of 1.15
Physical Review B (Condensed Matter and Materials Physics)
No. 3


fine structure (XAFS), metalorganic vapor phase epitaxy (MOVPE), onolayer (ML), x-ray absorption, x-ray diffraction (XRD), x-ray standing wave (XSW)


Gupta, J. , Watkins, S. , Crozier, E. , Woicik, J. , Harrison, D. , Jiang, D. , Pickering, I. and Karlin, B. (2000), Layer Perfection in Ultrathin InAS Quantum Wells in GaAs(001), Physical Review B (Condensed Matter and Materials Physics) (Accessed April 23, 2024)
Created December 31, 1999, Updated October 12, 2021