Hostname: page-component-77c78cf97d-9dm9z Total loading time: 0 Render date: 2026-04-24T18:04:06.799Z Has data issue: false hasContentIssue false
  • English
  • Français

Dipole Relaxation Current in N-Type AIxGa1-xAs

Published online by Cambridge University Press:  22 February 2011

Luis V.A. Scalvi ,
L. Oliveira  and
M. Siu Li
Luis V.A. Scalvi
Affiliation:
Departamento de Física, UNESP - Bauru, Cx. Postal 473, 17033 Bauru - SP, Brazil
L. Oliveira
Affiliation:
Departamento de Física e Ciência dos Materiais, Instituto de Física e Química de Sóo Carlos - USP, Cx. Postal 369, 13560 Sdo Carlos - SP, Brazil
M. Siu Li
Affiliation:
Departamento de Física e Ciência dos Materiais, Instituto de Física e Química de Sóo Carlos - USP, Cx. Postal 369, 13560 Sdo Carlos - SP, Brazil
Get access

Abstract

Thermally stimulated depolarization current (TSDC) spectra are reported for AlxGa1-xAs alloys with direct and indirect bandgap for the first time. The experimental data reveal the presence of electric dipoles in both samples which are interpreted by using the negative-U DX center model. These data are fitted by a relaxation time distribution approach yielding average activation energies in close coincidence with the DX center binding energy value.

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

[1] Chadi, D.J. and Chang, K.J., Phys. Rev. Lett. 61, 873 (1988); Phys Rev. B 39, 10063 (1989)CrossRefGoogle Scholar
[2] Maude, D.K., Eaves, L., Foster, T.J. and Portal, J.C., Phys Rev. Lett. 62, 1922 (1989)CrossRefGoogle Scholar
[3] Maude, D.K., Portal, J.C., Dmowski, L., Foster, T.J., Eaves, L., Nathan, M., Heiblum, M., Havris, J.J. and Beal, R.B., Phys. Rev. Lett. 55, 815 (1987)CrossRefGoogle Scholar
[4] O'Reilly, E.P., Appl. Phys. Lett. 55, 1409 (1989)CrossRefGoogle Scholar
[5] Havriliak, S. and , Negami, Polymer 8, 161 (1967)CrossRefGoogle Scholar
[6] Chand, N., Hendersen, T., Klem, J., Masselink, W. T., Fisch, R., Chang, Y.C. and Morkog, H., Phys. Rev. B 30, 4481 (1984)CrossRefGoogle Scholar
[7] Scalvi, L.V.A., Oliveira, L., Minami, E. and Li, M. Siu, Appl. Phys. Lett. 63, (in press)Google Scholar
[8] Oliveira, L., Magna, P., Gallo, H.J.H., Domenicucci, E.C. and Li, M. Siu, phys. stat. solidi (b) 171, 141 (1992)CrossRefGoogle Scholar
[9] Weperen, W. van and Hartog, H.W. den, Phys. Rev. B. 18, 2857 (1978)CrossRefGoogle Scholar
[10] Scalvi, L.V.A. and Minami, E., phys. stat. solidi (a) 139, 145 (1993)CrossRefGoogle Scholar
[11] Dmochowski, J.E., Dobackewski, L., Langer, J.M. and Jantsch, W., Phys. Rev. B 40, 9671 (1989)CrossRefGoogle Scholar
[12] Dobaczewski, L. and Kaczor, P., Phys. Rev. B 44, 8621 (1991)CrossRefGoogle Scholar