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Updated: Jun 9, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
A scanning tunneling microscope as a tunable nanoantenna for atomic scale control of optical-field enhancement
Damien Riedel1, Roger Delattre, Andrey G Borisov
1Institut des Sciences Moléculaires d'Orsay, ISMO, UMR 8214, CNRS-Université Paris-Sud, Bâtiment 210, 91405 Orsay Cedex, France.
Abstract:
The high stability of a low temperature (9 K) scanning tunneling microscope junction is used to precisely adjust the enhancement of an external pulsed vacuum ultraviolet (VUV) laser. The ensuing VUV optical-field strength is mapped on an hydrogenated Si(100) surface by imprinting locally one-photon atomic scale hydrogen desorption. Subsequent to irradiation, topography of the Si(100):H surface at the reacted area revealed a desorption spot with unprecedented atomic precision. Our results show that the shapes, positions, and sizes of the desorption spots are correlated to the calculated optical-field structure, offering real control of the optical-field distribution at molecular scale.
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