Zero-Bias Anomaly and Kondo-Assisted Quasiballistic 2D Transport
Zero-Bias Anomaly and Kondo-Assisted Quasiballistic 2D Transport
Nonequilibrium transport measurements in mesoscopic quasi-ballistic 2D electron systems show an enhancement in the differential conductance around the Fermi energy. At very low temperatures, such a zero-bias anomaly splits, leading to a suppression of linear transport at low energies. We also observed a scaling of the nonequilibrium characteristics at low …