Magnetotransport of coupled electron-holes
  The carriers in InAs-GaSb double quantum wells are hybrid ``electron-holes''. We study the magnetotransport properties of such particles using a two-component Keldysh technique, which results in a semi-analytic expression for the small-field current. We show that zero temperature current can be large even when the Fermi energy lies within the hybridization gap, a result which cannot be understood within a semiclassical (Boltzmann) approach. Magnetic field dependence of the conductance is also affected significantly by the hybridization of electrons and holes. 
Y. Naveh (SUNY, Stony Brook) and B. Laikhtman (Hebrew University,   Jerusalem)