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Bulk Negative Differential Conductivity in Germanium: Theory

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1 Author(s)
Paige, E.G.S. ; Royal Radar Establishment, Malvern, Worcestershire, England, UK

Two mechanisms have been proposed for the bulk negative differential conductivity of n-type germanium first observed by Elliott et al. These are discussed with reference to recent Monte Carlo calculations in which effects due to intravalley acoustic phonon scattering, 〈100〉 and 〈000〉 minima and ellipsoidal constant energy surfaces are explored. Strong evidence is presented that electron transfer to 〈100〉 minima causes this negative conductance. The origin of its temperature and orientation dependence is discussed.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

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IBM Journal of Research and Development  (Volume:13 ,  Issue: 5 )