Local detection of X-ray spectroscopies with an in-situ AFM

Mario Rodrigues (1) , Olivier Dhez (1) , Simon Le Denmat (1) , Joël Chevrier (2) , Roberto Felici (1) , Fabio Comin (1)

1 ESRF - European Synchrotron Radiation Facility
2 CP

We show how the in situ combination of Scanning Probe Microscopies (SPM) with X-ray microbeams enables many new experiments in the synchrotron radiation domain. Our instrument is based on an optics free AFM/STM that can be directly installed on most of the SR X-ray end stations. The instrument can be simply used for AFM imaging of the investigated sample or it can be used for detection of photoemitted electrons with a sharp STM like tungsten tip, thus leading to locally measure the EXAFS signal. Alternatively one can measure the photons absorbed by the tip, thus locally detecting diffraction. In this paper, we show examples of both measurements. We also describe the experimental setup and the tip-beam interaction that is a key point for alignment procedures. We finally show how these features can be exploited in an extended variety of domains, nanosciences and nanomechanics, just to name a few.

Mots clés: AFM; XAFS; X-ray diffraction; Germanium Nano-particle

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Instrumentations et Détecteurs [physics.ins-det]

Mario Rodrigues, Olivier Dhez, Simon Le Denmat, Joël Chevrier, Roberto Felici, et al.. Local detection of X-ray spectroscopies with an in-situ AFM. 2008. ⟨hal-00282863v2⟩