  Conditional probability distributions from exact diagonalization are used to
investigate the crystalline or liquid character of the downward cusp states in
parabolic quantum dots (QD's) at high magnetic fields. These states are
crystalline in character for fractional fillings covering both low and high
values, unlike the liquid Jastrow-Laughlin wave functions, but in remarkable
agreement with the rotating-electron-molecule ones [Phys. Rev. B 66, 115315
(2002)]. The cusp states are precursors to the bulk fractional quantum Hall
states (and not to the bulk Wigner crystal), since the collective rotation
stabilizes the rotating Wigner molecule (formed in the QD) relative to the
static one.
