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González Díaz, Germán ; Artús, L. ; Blanco, N. ; Cuscó, R. ; Ibañez, J. ; Long, A.R. ; Rahman, M. | American Institute of Physics | 2000-12-01We have verified the accuracy of free-charge determinations from Raman scattering in doped semiconductors by comparing the results obtained from phonon-plasmon coupled-mode line-shape fits with the charge-density values extracted from the analys[...]texto impreso
González Díaz, Germán ; Blanco, N. ; Artús, L. ; Cuscó, R. ; Ibañez, J. | American Physical Society | 1999-08-15We have studied LO phonon-plasmon coupled modes by means of Raman scattering in n-InP for carrier densities between 6x10(16) and 1x10(19) cm(-3). A line-shape theory based on the Lindhard-Mermin dielectric function that takes into account the no[...]texto impreso
González Díaz, Germán ; Martín, J.M. ; Artús, L. ; Cuscó, R. ; Ibañez, J. | American Institute of Physics | 1997-10-15We have studied the lattice recovery by rapid thermal annealing of Si+-implanted InP using Raman spectroscopy. The crystallinity recovery for different annealing temperatures of samples totally amorphized by the implantation can be monitored by [...]texto impreso
González Díaz, Germán ; Artús, L. ; Blanco, N ; Cuscó, R. ; Hernández, S. | American Institute of Physics | 2003-03-01Raman scattering has been used to study the lattice recovery and electrical activation of Si+-implanted In0.53Ga0.47 As achieved by rapid thermal annealing. The degree of crystallinity recovery, of totally amorphized samples is studied for annea[...]texto impreso
González Díaz, Germán ; Artús, L. ; Calleja, E. ; Cuscó, R. ; Iborra, E. ; Jiménez, J. ; Pastor, D. ; Peiró, F. | American Institute of Physics | 2006-08-15We have studied the effects of rapid thermal annealing at 1300 degrees C on GaN epilayers grown on AlN buffered Si(111) and on sapphire substrates. After annealing, the epilayers grown on Si display visible alterations with craterlike morphology[...]texto impreso
González Díaz, Germán ; Martín, J.M. ; Artús, L. ; Cuscó, R. | American Physical Society | 1994-10-15We present Raman spectra of InP measured under nonresonant conditions revealing multiphonon processes up to fifth order. Using an incident photon energy in the absorption region of the compound but far from any of its interband transitions, nonr[...]
