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Negative Conductivity Effects and Related Phenomena in Germanium. Part I

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3 Author(s)
McGroddy, J.C. ; IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598, USA ; Nathan, M.I. ; Smith, J.E.

This paper is the first part of a two-part review of recent work on current instabilities and related properties of germanium in high electric fields. In this part we discuss the general subject of high field transport in n-Ge with emphasis on the concept of saturated drift velocity. The oscillations which result from bulk negative differential conductivity (BNDC) in [100] and [110] directions at low temperatures are discussed and related to the saturation effects. A discussion of theoretical and experimental evidence with regard to the BNDC effects is presented. Finally, the anisotropy of the high-field conductivity is discussed and related to the Erlbach instability.

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.  

Published in:

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