We have used far-infrared absorption to probe the optical conductivity of metallic GaAs:Si sheets imbedded in GaAs by molecular-beam epitaxy. An enhancement of the conductivity is observed at short length scales which we attribute to localization and Coulomb-interaction effects. However, the spectra do not appear to be quantitatively described by existing theories for long length scales. © 1986 The American Physical Society.
SHORT-LENGTH-SCALE CONDUCTIVITY ENHANCEMENT IN A SUPERLATTICE / H. K., Ng; Capizzi, Mario; G. A., Thomas; R. N., Bhatt; A. C., Gossard. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - 33:10(1986), pp. 7329-7331. [10.1103/physrevb.33.7329]
SHORT-LENGTH-SCALE CONDUCTIVITY ENHANCEMENT IN A SUPERLATTICE
CAPIZZI, Mario;
1986
Abstract
We have used far-infrared absorption to probe the optical conductivity of metallic GaAs:Si sheets imbedded in GaAs by molecular-beam epitaxy. An enhancement of the conductivity is observed at short length scales which we attribute to localization and Coulomb-interaction effects. However, the spectra do not appear to be quantitatively described by existing theories for long length scales. © 1986 The American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
