Chemical Physics and Dynamics of Surfaces – E-STM platform

List of members


Internships and jobs




In the framework of a partnership with the Laboratoire de Chimie-Physique Matière et Rayonnement (LCPMR) and the Laboratoire de Réactivité de Surfaces (LRS), of Sorbonne University, the team manages an environmental scanning tunneling microscope (E-STM).

It is an Omicron VT STM XA specifically designed to work under a reactive gas environment. It allows us to study the samples under ultra-high vacuum (10-11 mbar) as well as under various atmospheres, and to follow in-situ and in real time growth and reactivity phenomena under the tip, and this in a temperature range from 40 K to 500 K. Consisting of two communicating ultra-high vacuum chambers, the ensemble also has various elaboration techniques (evaporators, ion gun, furnaces, gas ramps) and characterization techniques (low energy electron diffractometer, Auger spectrometer, mass spectrometer, optical spectroscopies).

The projects, specific to each partner or in collaboration, are carried out in rotation.

Evolution of the Ag(111) surface during Ge deposition at 380 K, for (a) 0 min, (b).
100 min, (c) 190 min, (d) 360 min. In (b), the white arrows indicate the outgrowths that have
grown during Ge deposition. Size of the images: 580 × 580 nm2. Tunneling conditions : VS =
1.4 V- I = 30pA. K. Zhang et al., Phys. Rev. B 102 (2020) 125418. © INSP – Geoffroy Prévot.


  • Hervé Cruguel: herve.cruguel(at)
  • Romain Bernard: romain.bernardl(at)
  • Yves Borensztein: yves.borenszteinl(at)
  • Geoffroy Prévot: geoffroy.prevot(at)