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Negative Resistance in GaS Single Crystals
Author(s) -
Romeo N.
Publication year - 1969
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19690360115
Subject(s) - ohmic contact , voltage , current (fluid) , condensed matter physics , materials science , mechanics , composite material , thermodynamics , electrical engineering , physics , engineering , layer (electronics)
The I‐U characteristic of GaS single crystals has four distinct zones: a low‐voltage zone which is ohmic, a zone in which the current depends on the voltage by a relationship of the I ∝ U 2 type, a third zone in which the slope of the characteristic is very sharp and current pulses are present and a fourth in which the characteristic is negative. Experimental findings have led us to suppose that this behaviour of GaS can be explained by Lampert's theory of negative resistance in insulators.