B. Szelag et F. Balestra, TRANSCONDUCTANCE ENHANCEMENT AT LOW-TEMPERATURES IN DEEP-SUBMICROMETER MOSFETS, Electronics Letters, 34(18), 1998, pp. 1793-1794
The impact of the quasi-Fermi potential gradient on transconductance e
nhancement at low temperatures is studied for silicon NMOSFETs. Using
experimental measurements and two-dimensional numerical simulations, i
t is shown that the influence of this gradient on transconductance bec
omes significant in the deep submicrometre range. This effect is expla
ined in terms of reduction of the intrinsic channel length and moving
of the Fermi level closer to the band edge at low temperatures.