We attempt an explanation of the main features of the high-temperature infrared absorption spectra of Fe2 in III-V compounds GaAs and GaP . We consider a linear Jahn-Teller interaction with two lattice modes of E symmetry, having energies in the range of acoustical and optical phonons, respectively. The upper vibronic states originating from all electronic states of the free ion must be considered to cope with the many possible transitions that arise at temperatures that populate several low-energy vibronic levels. We use Lanczos- recursion procedures to find energies and wave functions. A comparison with experimental energies and intensities is performed. A discussion comparing present findings with previous results based only on cold lines is also done.
Martinelli, L., Bevilacqua, G., Vogel, E.E., Mualin, O. (2002). Hot lines in the infrared absorption spectra of Fe^2+ in III-V compounds. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 65(15) [10.1103/PhysRevB.65.155203].
Hot lines in the infrared absorption spectra of Fe^2+ in III-V compounds
BEVILACQUA, G.;
2002-01-01
Abstract
We attempt an explanation of the main features of the high-temperature infrared absorption spectra of Fe2 in III-V compounds GaAs and GaP . We consider a linear Jahn-Teller interaction with two lattice modes of E symmetry, having energies in the range of acoustical and optical phonons, respectively. The upper vibronic states originating from all electronic states of the free ion must be considered to cope with the many possible transitions that arise at temperatures that populate several low-energy vibronic levels. We use Lanczos- recursion procedures to find energies and wave functions. A comparison with experimental energies and intensities is performed. A discussion comparing present findings with previous results based only on cold lines is also done.File | Dimensione | Formato | |
---|---|---|---|
PRBv65p155203.pdf
non disponibili
Tipologia:
Post-print
Licenza:
NON PUBBLICO - Accesso privato/ristretto
Dimensione
145.27 kB
Formato
Adobe PDF
|
145.27 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11365/11980
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo