2010.04.23

205, Eigineering 4th Bld, Hongo Campus

Prof. Mads Brandbyge
       DTU-Nanotech,
       Department of Micro and Nanotechnology,
       Technical University of Denmark

Title: Current-driven atomic dynamics and runawayinstabilities in nano-conductors

Abstract: 

The influence of an electronic current on atomic dynamics is an important and intriguing problem in nanoelectronics. We have recently proposed a description of the dynamics in the presence of current based on a semi-classical Langevin equation, which can be combined with first principles calculations [1]. Our approach encompass Joule heating as well as current-induced forces which do not conserve energy [2]. These latter forces can lead to runaway instabilities at certain critical voltages.

[1] J-T. Lü, M. Brandbyge, P. Hedegård, Nano Lett., in press.
[2] D. Dundas, E. J. McEniry, T. N. Todorov, Nature Nanotechnology 4, 99-102 (2009).

Schedule: 10:30  ~ 12:00  Friday 23th April, 2010

Place: 205, Eigineering 4th Bld, Hongo Campus

Attached file:  The 52th open seminar.pdf