Zero-bias anomaly and Kondo-assisted quasi-ballistic 2D transportReportar como inadecuado



 Zero-bias anomaly and Kondo-assisted quasi-ballistic 2D transport


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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 energies which resembles electron scattering by two-state systems, addressed in the framework of two-channel Kondo model. Detailed sample-to-sample reproducibility indicates an intrinsic phenomenon in unconfined 2D systems in the low electron-density regime.



Autor: Arindam Ghosh; Matthew Wright; Christophe Siegert; Michael Pepper; Ian Farrer; Chris Ford; David Ritchie

Fuente: https://archive.org/







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