T. Figielski et al., 3-DIMENSIONAL VERSUS 2-DIMENSIONAL ELECTRON-GAS INJECTION IN RESONANT-TUNNELING, Acta Physica Polonica. A, 88(4), 1995, pp. 707-710
A small ''precursor'' of resonance is observed before the main resonan
ce peak in the current-voltage characteristic of double-barrier resona
nt-tunnelling devices. The competition between the precursor and main-
peak current is examined within the temperature range 4.2-400 K. The p
recursor is interpreted as 3DEG contribution to the resonant tunnellin
g dominated by a 2DEG injection from a triangular well formed under bi
as in the emitter spacer layer.