Electric field dependent structural and vibrational properties of the Si(100)-H(2×1) surface and its implications for STM induced hydrogen desorption

  title={Electric field dependent structural and vibrational properties of the Si(100)-H(2×1) surface and its implications for STM induced hydrogen desorption},
  author={Kurt Stokbro},
  journal={Surface Science},
  • K. Stokbro
  • Published 1 March 1999
  • Physics
  • Surface Science
20 Citations
Theoretical study of vibration-phonon coupling of H adsorbed on a Si(100) surface.
A perturbation-theory study of vibrational lifetimes for the bending and stretching modes of hydrogen adsorbed on a Si(100) surface is presented and it is found that the H-Si (upsilon(s) = 1) stretching vibration decays on a nanosecond timescale, whereas for theH-Si bending mode a picosecond decay is predicted.
Electronic mechanism of STM-induced diffusion of hydrogen on Si(100).
A microscopic model for the hydrogen transfer is developed and using the experimental data, information is extracted on the resonance lifetime and the transfer yield per resonant electron, indicating an electron-assisted transfer mechanism.
Creating pseudo-Kondo resonances by field-induced diffusion of atomic hydrogen.
In low-temperature scanning tunneling microscopy (STM) experiments a cerium adatom on Ag(100) possesses two discrete states with significantly different apparent heights, which exhibit a Kondo-like feature at very low bias voltages.
An ab initio study of the field-induced position change of a C60 molecule adsorbed on a gold tip
Recent current/voltage (I/V) curve measurements suggest that C-60 molecules deposited in gold nanojunctions change their adsorption configuration when a finite voltage in a two-terminal setting is


Vibrational dynamics of the Si–H stretching modes of the Si(100)/H:2×1 surface
The lifetime T1 of the symmetric Si–H stretching mode for the Si(100)/H:2×1 surface is significantly longer (T1≳6 ns at 100 K) than for Si(111)/H:1×1. T1 is strongly sample dependent and temperature
Atomic-Scale Desorption Through Electronic and Vibrational Excitation Mechanisms
The scanning tunneling microscope has been used to desorb hydrogen from hydrogen-terminated silicon surfaces and a countable number of desorption sites can be created and the yield and cross section are obtained.
Coupling of an adsorbate vibration to a substrate surface phonon: H on Si(111).
High-resolution infrared--reflection-absorption measurements of an unreconstructed, ideally H-terminated Si(111) surface suggest a strong anharmonic coupling between the Si-H stretching and bending modes.
First-principles theory of inelastic currents in a scanning tunneling microscope
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