Abstract
We identify via thermodynamic energy minimization the role of subsurface strain (caused by surface reconstruction and dimerization) in the ordering of Ga0.5In0.5P alloys. Depending on the growth conditions, the alloy surfaces can have either β2(2×4), c(4×4) or c(8×6) reconstructions, with characteristic 2×1, 1×2 and 2×3 RHEED patterns. We show that (i) the 1×2 reconstruction will lead to a CuPtA surface ordering, (ii) a 2×1 reconstruction will lead to a CuPtB ordering, (iii) a 2×3 reconstruction will lead to a 3-period ordering, and (iv) single (double) bilayer steps are stable at low (high) anion chemical potential. These results are in good agreement with recent experimental observations.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. Gomyo, K. Makita, I. Hino and T. Suzuki, Phys. Rev. Lett. 72, 673 ({py1994}).
B. A. Philips, I. Kamiya, L. T. Florez, D. E. Aspnes, S. Mahajan and J. P. Harbison, Phys. Rev. Lett. 74, 3640 ({py1995}).
A. Gomyo, M. Sumino, I. Hino and T. Suzuki, Japan J. Appl. Phys. 34, L469 (1995).
A. Zunger and S. Mahajan in Handbook of Semiconductors, Edited by S. Mahajan (Elsevier, Amsterdam), Vol. 3, p. 1399 (1994).
J. E. Bernard, L. G. Ferreira, S. H. Wei and A. Zunger, Phys. Rev. B38, 6338 (1988); J. E. Bernard, R. G. Dandrea, L. G. Ferreira, S. Froyen, S. H. Wei and A. Zunger, Appl. Phys. Lett. 56, 731 (1990)
S. Froyen and A. Zunger, Phys. Rev. Lett. 66, 2132 ({py1991}).
J. E. Bernard, S. Froyen and A. Zunger, Phys. Rev. B44, 11178 ({py1991}); R. Osorio, J. E. Bernard, S. Froyen and A. Zunger, Phys. Rev. B45, 11173 (1992).
M. D. Pashley, K. W. Haberern, W. Friday, J. M. Woodall and P. D. Kirchner, Phys. Rev. Lett. 60, 2176 (1988); H. H. Farrell and C. J. Palmstrom, J. Vac. Sci. Technol. B8, 903 (1990); D. K. Biegelsen, R. D. Bringans, J. E. Northrup and L. E. Swartz, Phys. Rev. B41, 5701 (1990).
J. E. Northrup and S. Froyen, Phys. Rev. Lett. 71, 2276 (1993); J. E. Northrup and S. Froyen, Phys. Rev. B50, 2015 (1994).
S. Froyen and A. Zunger, Phys. Rev. B (MS#: BJ5703, in press).
S. B. Zhang and A. Zunger, Phys. Rev. B (Jan. 15, 1996).
M. Sauvage-Simkin, Y. Garreau, R. Pinchaux, M. B. Veron, J.P. Landesman and J. Nagle, Phys. Rev. Lett. 75, 3485 ({py1995}).
S. B. Zhang and A. Zunger, Special issue of J. Cryst. Growth on “U.S.-Japan Meeting on Semiconductor Alloys”, edited by G. B. Stringfellow (1996, in press).
G. B. Stringfellow and L. C. Su, Abstracts, Mat. Res. Soc. 1995 Fall Meeting, Boston, p. 709.
Acknowledgments
We thank A. Gomyo and T. Suzuki for useful comments. This work was supported by the Office of Energy Research, Division of Materials Science, U. S. Department of Energy, under contract DE-AC36-83-CH10093.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zhang, S.B., Froyen, S. & Zunger, A. Theory of Surface Dimerization-Induced Ordering in GaInP Alloys. MRS Online Proceedings Library 417, 43–48 (1995). https://doi.org/10.1557/PROC-417-43
Published:
Issue Date:
DOI: https://doi.org/10.1557/PROC-417-43