On the Zero-Bias Anomaly in Quantum Wires

Details On the Zero-Bias Anomaly in Quantum Wires On the Zero-Bias Anomaly in Quantum Wires

2008-10-06

arxiv.org/abs/0810.0960v1

Phys. Rev. B 79, 161307 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Undoped GaAs/AlGaAs heterostructures have been used to fabricate quantum wires in which the average impurity separation is greater than the device size. We compare the behavior of the Zero-Bias Anomaly against predictions from Kondo and spin polarization models. Both theories display shortcomings, the most dramatic of which are the linear electron-density dependence of the Zero-Bias Anomaly spin-splitting at fixed magnetic field B and the suppression of the Zeeman effect at pinch-off.

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