Au/Mn 5Ge 3/n-Ge(111) Schottky barrier characteristics from I-V-T and C-V-T data

Azzouz Sellai, Zahir Ouennoughi, Vinh Le Thanh, Matthieu Petit, Lisa Michez, Abdelmadjid Mesli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

I-V and C-V measurements performed on Au/Mn 5Ge 3/n-Ge structures, prepared for spintronic applications, are presented and analysed over a wide range of temperatures (50 K-300 K) with the goal of elucidating the prevailing conduction mechanism(s). The effects of image force lowering and recombination in the depletion region on the measured current are shown to be of little significance and cannot acceptably explain the drawbacks that arise when a pure thermionic emission model is used in analyzing the temperature dependence of the obtained electrical characteristics. Considering, however, the eventual contribution of thermally assisted tunneling to the current generating mechanism could explain the departure from pure thermionic emission. Thermionic field emission seems indeed to explain better our I-V data and the temperature dependence of related parameters. Also, the C-V measurements reveal a nonuniform carrier distribution with manifest peaks in the doping profile, possibly signifying the existence of charge accumulation and trap centers.

Original languageEnglish
Title of host publicationProceedings of the Mediterranean Electrotechnical Conference - MELECON
Pages179-182
Number of pages4
DOIs
Publication statusPublished - 2012
Event2012 16th IEEE Mediterranean Electrotechnical Conference, MELECON 2012 - Yasmine Hammamet, Tunisia
Duration: Mar 25 2012Mar 28 2012

Other

Other2012 16th IEEE Mediterranean Electrotechnical Conference, MELECON 2012
CountryTunisia
CityYasmine Hammamet
Period3/25/123/28/12

Keywords

  • conduction mechanism
  • electrical characteristics
  • Schottky diodes
  • spintronic devices

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Sellai, A., Ouennoughi, Z., Le Thanh, V., Petit, M., Michez, L., & Mesli, A. (2012). Au/Mn 5Ge 3/n-Ge(111) Schottky barrier characteristics from I-V-T and C-V-T data. In Proceedings of the Mediterranean Electrotechnical Conference - MELECON (pp. 179-182). [6196408] https://doi.org/10.1109/MELCON.2012.6196408