Activated Behavior of the 0.7 2(e^2)/h Conductance Anomaly in Quantum Point Contacts

Details Activated Behavior of the 0.7 2(e^2)/h Conductance Anomaly in Quantum Point Contacts Activated Behavior of the 0.7 2(e^2)/h Conductance Anomaly in Quantum Point Contacts

1998-08-02

arxiv.org/abs/cond-mat/9808007v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages (RevTex), 5 postscript figures added, Contributed paper for ICPS24, Jerusalem, August 2-7, 1998

Scientific paper

The 0.7 conductance anomaly in the quantized conductance of trench etched GaAs quantum point contacts is studied experimentally. The temperature dependence of the anomaly measured with vanishing source-drain bias reveals the same activated behavior as reported earlier for top-gated structures. Our main result is that the zero bias, high temperature 0.7 anomaly found in activation measurements and the finite bias, low temperature 0.9 anomaly found in transport spectroscopy have the same origin: a density dependent excitation gap.

Affiliated with

Also associated with

No associations

Rating

Activated Behavior of the 0.7 2(e^2)/h Conductance Anomaly in Quantum Point Contacts does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Activated Behavior of the 0.7 2(e^2)/h Conductance Anomaly in Quantum Point Contacts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Activated Behavior of the 0.7 2(e^2)/h Conductance Anomaly in Quantum Point Contacts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-670988