How low can electronic resistance go?

Seminar
Colloquium
QUEST Center event
No
Speaker
Ady Stern (Weizmann)
Date
20/12/2021 - 14:00 - 12:30Add to Calendar 2021-12-20 12:30:00 2021-12-20 14:00:00 How low can electronic resistance go? Zoom link: https://us02web.zoom.us/j/89236785442 How low can electronic resistance go?   Ady Stern (Weizmann)   Electronic resistance is a fundamental notion both in condensed matter physics and in everyday life, where it is a source of heating caused by electronic currents. Typically, resistance originates from electrons scattering off impurities. However, even a perfectly clean system harbors a resistance, inversely proportional to the number of its conduction channels. Recent theories have shown that scattering of the flowing electrons off one another reduces this resistance, raising the question of its lower bound. Here we show that for a fixed number of channels the resistance may be practically eliminated, and give a transparent physical picture of this elimination.     Physics Building 203, Room 221 and https://us02web.zoom.us/j/89236785442 Department of Physics physics.dept@mail.biu.ac.il Asia/Jerusalem public
Place
Physics Building 203, Room 221 and https://us02web.zoom.us/j/89236785442
Abstract

Zoom link: https://us02web.zoom.us/j/89236785442

How low can electronic resistance go?

 

Ady Stern (Weizmann)

 

Electronic resistance is a fundamental notion both in condensed matter physics and in everyday life, where it is a source of heating caused by electronic currents. Typically, resistance originates from electrons scattering off impurities. However, even a perfectly clean system harbors a resistance, inversely proportional to the number of its conduction channels. Recent theories have shown that scattering of the flowing electrons off one another reduces this resistance, raising the question of its lower bound. Here we show that for a fixed number of channels the resistance may be practically eliminated, and give a transparent physical picture of this elimination.  

 

Last Updated Date : 14/12/2021