Abstract
The spontaneous formation of lateral composition modulation in AlAs/lnAs short period superlattices on InP (001) substrates has been investigated. Transmission electron microscopy and x-ray diffraction reciprocal space mapping show that the lateral modulation is very regular, with a periodicity along the [110] direction on the order of 180Å. A surprising: result is that this material system also exhibits a lateral modulation along the [1–10] direction, with a periodicity of 330Å. Reflection high energy electron diffraction performed during the deposition revealed that the reconstruction changed from (2 × 1) during the InAs deposition cycle to (1 × 2) during the AlAs cycle, which may be related to the presence of the modulation in both <110> directions. High magnification transmission electron micrographs show that the surface is undulated and that these undulations correlate spatially with composition modulation. Detailed analysis of the images shows that the contrast observed is indeed due to composition modulation. Photoluminescence from the modulated layer is strongly polarized and red-shifted by 220 meV.
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References
See for example, A.G. Cullis, MRS Bulletin 21 (1996).
R.J. Asaro and W.A. Tiller, Met. Trans. 3, 1789 (1972).
D.J. Srolovitz, Acta Metall. 37, 621 (1989).
J.E. Guyer and P.W. Voorhees, Phys. Rev. Lett. 74, 4031 (1995).
J. Tersoff and F.K. LeGoues, Phys. Rev. Lett. 72, 3570 (1994).
C. Roland, MRS Bulletin 27 (April 1996).
D.E. Jesson, K.M. Chen and S.J. Pennycook, MRS Bulletin 31 (April 1996).
J. Mirecki Millunchick, R.D. Twesten, D.M. Follstaedt, S.R. Lee, E.D. Jones, Y. Zhang, H.M. Cheong, S.P. Ahrenkiel and A. Mascarenhas, Appl. Phys. Lett. 70, 1402 (1997).
J.E. Guyer and P.W. Voorhees, Phys.Rev. B 54, 11710 (1996).
A. Zunger and S. Mahajan, Handbook on Semiconductors 3, 1399 (Elsevier Science, 1994).
A. C. Chen, A.M. Moy, L.J. Chou, K.C. Hsieh and K.Y. Cheng, Appl. Phys. Lett. 66, 2694 (1995).
S. T. Chou, K.Y. Cheng, L.J. Chou and K.C. Hseih, J. Appl. Phys. 78, 6270 (1995).
S.T. Chou, K.C. Hseih, K.Y. Cheng and L.J. Chou, J. Vac. Sci. Technol B 13, 650 (1995).
J. Yoshida, K. Kishino, D.H. Jang, S. Nahm, I. Nomura and A. Kikochi, Optical and Quantum Electron. 28, 547 (1996).
S.R. Lee, B.L. Doyle, T.J. Drummond, J.W. Medernach and R.P. Schneider Jr., Advances in X-Ray Analysis, ed. P. Predecki (New York: Plenum Press, 1995), p. 201.
T. Hashizume, Q.K. Xue, J. Zhou, A. Ichimiya and T. Sakurai, Phys. Rev. Lett. 73, 2208 (1994).
K. Shiraishi, Appl. Phys. Lett. 60, 1363 (1992).
J.-I. Chyi, J.-L. Shieh, R.-M. Lin, T.-E. Nee and J.-W. Pan, Appl. Phys. Lett. 65, 699 (1994).
M.M.J. Treacy, J.M. Gibson and A. Howie, Phil. Mag. A 51, 389 (1985).
R.D. Twesten, J. Mirecki Millunchick, S.R. Lee, D.M. Follstaedt, E.D. Jones, S.P. Ahrenkiel, Yong Zhang, and A. Mascarenhas, Thin Films-Structure and Morphology, ed. S. Moss, D. Ila, R.C. Cammarata, E.H. Chason, T.L. Einstein and E.D. Williams, 441, (Pittsburgh, PA: Mater. Res. Sot, 1997), p. 187.
A. Mascarenhas, R.G. Alonso, G.S. Homer, S. Froyen, K.C. Hsieh and K.Y. Cheng, Phys. Rev. B 48, 4907 (1993).
K.Y. Cheng, K.C. Hsieh, J.N. Baillargeon and A. Mascarenhas, Inst. Phys. Conf. Ser., 120 (Bristol: Inst. of Phys., 1991), p. 589.
A. Mascarenhas, Y. Zhang, R.G. Alonso and S. Froyen, Solid State Comm. 100, 47 (1997).
Y. Zhang and A. Mascarenhas, unpublished. $
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Millunchick, J.M., Twesten, R.D., Lee, S.R. et al. Spontaneous lateral composition modulation in AlAs/InAs short period superlattices via the growth front. J. Electron. Mater. 26, 1048–1052 (1997). https://doi.org/10.1007/s11664-997-0242-1
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DOI: https://doi.org/10.1007/s11664-997-0242-1