2010.04.23

工学部4号館１階 205（セミナー室）

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

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

内容の概要説明：
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).

日時：2010年4月23日（金） 10:30 ～12:00

場所：東京大学工学部4号館１階 205（セミナー室）

添付ファイル：第52回公開セミナー案内.pdf