Integer and fractional charge solitons in modulated strips in the   fractional quantum Hall regime
  We propose the existence and study the solitonic excitations in two kinds of samples in the fractional quantum Hall regime. One is a strip modulated by a one-dimensional array of gates. The other is made of two parallel strips coupled by a one-dimensional array of tunnel barriers. We predict the existence of integer charge solitons in the first case, and fractional charge solitons in the second case. We study the two cases both in the dissipative and in the inertial limits. 
Eshel Ben-Jacob, Francisco Guinea, Ziv Hermon and Alexander Shnirman