Abstract
Gunn's experimental result indicating a voltage-controlled negative resistance current-domain voltage characteristic is theoretically verified in this paper, employing a considerable extension of the so-called equal areas analysis. The theoretical analysis indicates that if sufficient sample voltage is applied, or if the sample is short enough, a minimum domain velocity (MDV) condition is obtained (this appears to be the region Gunn terms the unsteady region) a condition wherein the accumulation layer literally catches up with the depletion layer (the two comprising the domain), thus producing domain collapse prior to its exit from the anode. (This, however, is not the LSA mode.) A family of current-domain voltage curves is theoretically obtained, with carrier concentrate and sample length as the parameters.
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