D. Banerjee et B. Basu, THE STUDY OF WAVE-FUNCTION AND THE BERRY PHASE OF THE PARTICLES IN HALL FLUID, Modern physics letters B, 12(23), 1998, pp. 965-971
We have calculated the Berry phase of Hall particles which are found t
o remain constant over the filling factor nu in a special arrangement.
It has been found that the probability of getting this phase vanishes
at nu > 1/5. This is the implication of the crystallization in the Ha
ll fluid after the filling factor nu = 1/6.