First principles theory of inelastic currents in a scanning tunneling microscope

Preprint

27 February 1998

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9802301

Abstract

A first principles theory of inelastic tunneling between a model probe tip and an atom adsorbed on a surface is presented, extending the elastic tunneling theory of Tersoff and Hamann. The inelastic current is proportional to the change in the local density of states at the center of the tip due to the addition of the adsorbate. We use the theory to investigate the vibrational heating of an adsorbate below an STM tip. We calculate the desorption rate of H from Si(100)-H(2$\times$1) as function of the sample bias and tunnel current, and find excellent agreement with recent experimental data.

Keywords

TUNNELING MICROSCOPE
THEORY OF INELASTIC
SCANNING TUNNELING
DENSITY OF STATES
PRINCIPLES THEORY
INELASTIC CURRENT
VIBRATIONAL
DESORPTION

All Related Versions

Version 1, 1998-02-27, ArXiv
Published version: Physical Review B, 58 (12), 8038.

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