Theory of single molecule motions induced by vibrational excitation with STM

COLL 407

Hiromu Ueba, ueba@eng.u-toyama.ac.jp, Department of Electronics, University of Toyama, Gofuku, Toyama, Japan
It is a theoretical challenge to study how the energy stored in a specific vibrational mode excited by tunnelling electrons is converted to overcome the potential barrier along the reaction coordinate (RC) associated with a single molecule motion on a surface. In addition to a process of vibrational ladder climbing by a direct excitation of the RC mode, I discuss the theoretical scenarios of single- and two-electron processes in which the excitation of high-frequency modes in adsorbed molecules may result in motion of the molecules through the intermode coupling to the RC mode.