1 research outputs found
THE ANOMALOUS DIFFUSION IN HIGH MAGNETIC FIELD AND THE QUASIPARTICLE DENSITY OF STATES
We consider a disordered two-dimensional electronic system in the limit of
high magnetic field at the metal-insulator transition. Density of states close
to the Fermi level acquires a divergent correction to the lowest order in
electron-electron interaction and shows a new power-law dependence on the
energy, with the power given by the anomalous diffusion exponent . This
should be observable in the tunneling experiment with double-well GaAs
heterostructure of the mobility at temperatures of and voltages of .Comment: 12 pages, LATEX, one figure available at request, accepted for
publication in Phys. Rev.