Title of article
Conductance quantization and zero bias peak in a gated quantum wire
Author/Authors
R.W. Giannetta، نويسنده , , T.A. Olheiser، نويسنده , , M. Hannan، نويسنده , , I. Adesida، نويسنده , , M.R Melloch، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2005
Pages
8
From page
270
To page
277
Abstract
Conductance measurements are reported for an 0.4 μm wide GaAs/AlGaAs quantum wire with 7 cross-channel gates. The device exhibited integral conductance steps, magnetoconductance plateaus in agreement with the multiprobe formula and a conductance feature at 0.65(2e2/h). Differential conductance measurements down to 50 mK revealed a zero bias conductance peak that vanished with an in-plane field of 1 T. The width of this peak was comparable to that reported in high mobility quantum point contacts (Phys. Rev. Lett. 88 (2002) 226805). At low conductances this device also exhibited single electron charging characteristic of a multiple quantum dot.
Keywords
Zero bias peak , Conductance quantization , Coulomb blockade , Kondo , Multiprobe , Mesoscopic
Journal title
Physica E Low-dimensional Systems and Nanostructures
Serial Year
2005
Journal title
Physica E Low-dimensional Systems and Nanostructures
Record number
1051634
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