扫描隧道显微镜横向单原子操纵的理论研究
The dynamics of lateral manipulation for cobalt=Cu111 has been investigated combining the model of
vibrational heating and first-principles density functional calculations. The frustrated translational mode
responsible for lateral excitation is identified as a vibrational resonance involving a concerted motion
between the adatom and surface phonons. The calculated frequency shows good agreement with the onset
energy for adatom hopping induced by inelastic tunneling. Simulation of the power law, compared with
experiment, suggests that the atom hopping overcomes a nonadiabatic barrier due to the nonequilibrium
local heating of the translational mode.
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