Origin Of Current-Induced Forces In An Atomic Gold Wire: A First Principles Study

Details Origin Of Current-Induced Forces In An Atomic Gold Wire: A First Principles Study Origin Of Current-Induced Forces In An Atomic Gold Wire: A First Principles Study

2002-07-16

arxiv.org/abs/cond-mat/0207401v3

Phys. Rev. B. 67, 193104 (2003)

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.67.193104

We address the microscopic origin of the current-induced forces by analyzing results of first principles density functional calculations of atomic gold wires connected to two gold electrodes with different electrochemical potentials. We find that current induced forces are closely related to the chemical bonding, and arise from the rearrangement of bond charge due to the current flow. We explain the current induced bond weakening/strengthening by introducing bond charges decomposed into electrode components.

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