Ve. Sivokon et al., NONLINEAR FEATURES OF ELECTRON-MOBILITY I N 2D WIGNER CRYSTAL OVER LIQUID-HELIUM, Fizika nizkih temperatur, 21(10), 1995, pp. 1020-1022
The mobility of 2D electron system over liquid helium is measured in n
on-ordered and crystal states at electron concentrations of 6.10(8) an
d 1.3 . 10(9) cm(-2) frequency 1.3 MHz and in the temperature range 1.
5-0.09 K. In the Wigner crystal at high leading fields the non-linear
mobility behavior was observed, which depends on the geometry of the e
lectron system.