Absorption spectra of GaAs/Al-x Ga1-xAs random superlattices at 2 K

Transmission spectra of ordered and disordered GaAs/Al0.3Ga0.7As superlattices (SL) were measured at 2 K. The experimental results are compared with numerical simulations obtained by means of a transfer matrix method. The numerical results indicate that a multiple-quantum-well model accounts for the main features of random SL, and that a disorder-induced fine structure is present. The agreement between the measured spectra and the numerical calculations supports the predicted features.


Published in:
Physical Review B, 53, 3, 1018-1021
Year:
1996
ISSN:
0163-1829
Keywords:
Note:
Ist nazl fis mat,unita bari,bari,italy. ecole polytech fed lausanne,inst appl phys,ch-1015 lausanne,switzerland. univ geneva,appl phys grp,ch-1211 geneva 4,switzerland. ecole polytech fed lausanne,inst microoptoelectr,ch-1015 lausanne,switzerland. ecole polytech fed lausanne,inst genie atom,ch-1015 lausanne,switzerland. Lorusso, GF, UNIV BARI,DIPARTIMENTO FIS,VIA AMENDOLA 173,I-70126 BARI,ITALY.
ISI Document Delivery No.: TU290
Times Cited: 14
Cited Reference Count: 18
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Laboratories:




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