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Enhancements in Two Dimensional Electron Gas Density and Mobility in δ-Doped AiGaAs Heterostructures

  • J. E. Cunningham (a1), G. L Timp (a1), E. F. Schubert (a1), W. T. Tsang (a1), P. G. N. DeVegvar (a1), T. H. Chiu (a1) and E. Agyekum (a1)...

Abstract

We report our recent investigations of a new structure formed by b-doping the barrier of an AlGaAs/GaAs heterostructure. In this new structure we have observed both a mobility of 1.9×lO6cm2/Vsec and the fractional quantum hall effect. We compare low temperature mobilities and densities achieved with the δ-doped heterostructure with corresponding high values reported in the literature for the homogeneously- doped heterostructure. We show that systematic enhancements in both density and mobility occur in the b-doped heterostructure. By δ-doping both barriers of a quantum well we have also achieved electron concentrations of 4×1012cm -2 in the well.

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[1] Dingle, R., Stormer, H. L., Gossard, A. C. and Wiegmann, W., Appl. Phys. Lett. 33, 665 (1978).
[2] L Stormer, H., Tsui, D. C. and Gossard, A. C., Phys. Rev. Lett. 48, 1599 (1982).
[3] English, J. H., Gossard, A. C., Stormer, H. L. and K Baldwin, W., Appl. Phys. Lett. 50, 1826 (1987).
[4] Foxon, C. T., Harris, J. J., Wheeler, R. G. and Lacklison, D. E., J. Vac. Sci. Technol. B 4, 511 (1986).
[5] Hirajkawa, K, Sakaki, J. and Yoshima, J., Appl. Phys. Lett. 45, 253 (1984).
[6] Cunningham, J. E., Tsang, S. T., Schubert, E. F., Timp, G. T., Chiu, T. H., Chang, A., Agyekum, E. and Ditzenberger, J. A., J. Vac. Sci. Technol. B4, in press.
[7] Cunningham, J. E. and Agyekum, E., unpublished.
[8] Kuo, T. Y., Cunningham, J. E., Schubert, E. F., Tsang, W. T., Chiu, T. H., Ren, F., Fonstad, C. G., J. Appl. Phys. submitted.
[9] Hiyamizu, K, Saito, J., Nanbu, K and Ishikawa, T., Jpn. J. Appl. Phys. 22, 1609 (1983).
[10] Mendez, E. E., Price, P. J., and Heiblum, M., Appl. Phys. Lett. 45, 294 (1984).
[11] Walukiewicz, W., Ruda, H. E., Lagowski, J. and Gatos, J. C., Phys. Rev. B 30, 4571 (1984).
[12] Weimann, G. and Schlapp, W., Appl. Phys. Lett. 46, 411 (1985).
[13] Heiblum, M., Mendez, E. E. and Stern, F., Appl. Phys. Lett. 45, 294 (1984).
[14] Hwang, J. C. M., Kastalsky, A., Stormer, H. L. and Keramidas, V. G., Appl. Phys. Lett. 44, 802 (1984).
[15] Tsui, D. C., Stormer, H. L., Hwang, J. C. M., Brooks, J. S., Naughton, M. J., Phys. Rev. B 28, 2274 (1983).
[16] Price, P. J., J. Vac. Sci. Technol. 19, 599 (1981).
[17] Schubert, E. F., Cunningham, J. E., Tsang, W. T. and Timp, G., Appl. Phys. Lett. 51, 1170 (1987).

Enhancements in Two Dimensional Electron Gas Density and Mobility in δ-Doped AiGaAs Heterostructures

  • J. E. Cunningham (a1), G. L Timp (a1), E. F. Schubert (a1), W. T. Tsang (a1), P. G. N. DeVegvar (a1), T. H. Chiu (a1) and E. Agyekum (a1)...

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