1 option

The high frequency electron scattering rate and drude zener theory in compound semiconductors B. Jensen

ASTM Symposia Papers Available online

ASTM Symposia Papers
Format:
Author/Creator:
Contributor:
Language:
English
Subjects (All):
Physical Description:
1 online resource (11 pages) illustrations, figures, tables
Place of Publication:
West Conshohocken, Pa. ASTM International 1981
Summary:
Recent advances in laser and semiconductor device technology have generated a growing concern over the validity of the standard transport theory in the limit of small length scales, high frequencies, and high field intensities. This has necessitated a reexamination of the foundations of transport theory and the necessary quantum extension in these limits. In this paper, the response of free carriers in a polar semiconductor to a high frequency electric field is examined. A frequency dependent relaxation time has been derived for free carriers in polar semiconducting compounds with the band structure of the Kane theory from a quantum extension of the Boltzmann transport equation. The expression obtained reduces to the usual quasiclassical Boltzmann result in the limit of low frequencies, elastic scattering mechanisms, and parabolic bands, and gives the quantum result at high frequencies when used in the Drude Zener formula for the optical conductivity. A high frequency extension of the Drude theory is thus obtained which gives the observed ?3 dependence of the absorption coefficient characteristic of polar scattering in III-V and II-VI compounds in the near infrared, and reduces to the usual ?2 dependence at sufficiently low frequencies. At high intensities, the scattering rate becomes a function of field intensity
Notes:
  • Includes bibliographical references
  • Online resource; title from publisher's website, viewed February 19, 2016
Related Work:
American Society for Testing and Materials. Selected Technical Papers

The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.