Yp. Monarkha et al., EDGE EXCITATIONS OF A 2-DIMENSIONAL ELECTRON-SOLID IN A MAGNETIC-FIELD, Journal of physics. Condensed matter, 9(7), 1997, pp. 1537-1545
The effect of the solidification transition on the edge phenomena of a
two-dimensional (2D) electron system in a magnetic field is studied i
n the classical and quantum melting regimes. It is shown that in the p
ure solid system (T --> 0), instead of the conventional edge magnetopl
asmons (EMP) which are observed in the liquid state, new magneto-Rayle
igh waves (MRW) can propagate along the solid boundary and these have
much lower frequencies: (omega)MRW much less than (omega)EMP If at a f
inite temperature T < T-c the solidification of the edge is not comple
ted due to the smooth density profile, the EMP and the new boundary di
splacement waves can propagate in a thin electron liquid strip surroun
ding the 2D solid. The properties of these waves are affected by the s
olid boundary which may provide an alternative approach for probing th
e Wigner transition.