Science of Nanoscale Systems and their Device Applications
Science of Nanoscale Systems and their Device Applications
2005 Research Results

Connections discovered between
electron flow in a 2DEG and freak waves in the ocean
Eric J. Heller

We have discovered that applying microwave light to the transistor can restore the Kondo effect for a quantum dot with a voltage applied between the leads. Figure A shows the conductance as a function of the microwave voltage (horizontal scale) applied to a quantum dot transistor. The bright red peak for zero microwaves corresponds to the weak bond, and increasing the voltage between the leads (vertical scale) destroys it. However, at increasing microwave voltages two new peaks appear. Figure B shows that the voltage difference between the central peak and one of the new ones is hf/e, where f is the microwave frequency. This means that microwave photons restore the Kondo bond when the photon energy hf equals the electrical energy eV.

Connections discovered between electron flow in a 2DEG and freak waves in the ocean

Figure showing wave energy focussing (left) due to current eddies (second from left, in color), locations of dangerous extreme wave events in a long simulation shown in red in the next panel, and on the right the location of less devastating but still dangerous freak waves events in the same simulation. Far right: view from the bridge of a ship of an approaching freak wave.

 

  Last Modified June 20, 2006 by the NSEC Office.