Finite bias charge detection in a quantum dot

Details Finite bias charge detection in a quantum dot Finite bias charge detection in a quantum dot

2005-03-01

arxiv.org/abs/cond-mat/0503026v2

Phys. Rev. B 72, 035312 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures

Scientific paper

10.1103/PhysRevB.72.035312

We present finite bias measurements on a quantum dot coupled capacitively to
a quantum point contact used as a charge detector. The transconductance signal
measured in the quantum point contact at finite dot bias shows structure which
allows us to determine the time-averaged charge on the dot in the non-blockaded
regime and to estimate the coupling of the dot to the leads.

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