S. Semenchinsky et al., ANOMALOUS HALL RESISTANCE IN SI(001) HIGH-MOBILITY INVERSION-LAYERS AT HIGH ELECTRON CONCENTRATIONS, Physics letters. A, 217(6), 1996, pp. 335-339
Electron transport in high mobility Si(001) MOSFETs has been studied e
xperimentally in the temperature range 80 mK-4.2 K and in magnetic fie
lds up to 7 T. For high electron concentrations N-s > 3 x 10(16) m(-2)
, when more electron subbands are populated, we have observed an anoma
lous dependence of the Hall constant, RH, On the magnetic field and th
e gate voltage. This phenomenon cannot be explained within the framewo
rk of conventional two-subband transport model.