Hall Mobility Field Effect in Two Layer Conductivity Samples
A. Mekys a, J. Storasta a, A. Zindulis a, A.P. Smilga a and S. Balakauskas b
a Institute of Materials Science and Applied Research, Vilnius University, Saulėtekio 9-III, 10222 Vilnius, Lithuania
b Institute of Semiconductors, A. Gov stauto 11, LT-01108 Vilnius, Lithuania
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Received: 27 11 2007; Revised version: 28 03 2008; In final form: 23 07 2008;
Classical Hall mobility experimental setup was applied for samples with parallel plane (sandwich) variable conductivity layers. The measured effective Hall mobility strongly depends on applied electric field and does not characterise the real carrier mobility. Numerical modelling explains the effect as a consequence of electric field redistribution and lowering at Hall contacts. Measurement of carrier mobility in such structures is suggested.
DOI: 10.12693/APhysPolA.114.903
PACS numbers: 84.37.+q