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Advanced light source provides a new look at vanadium dioxide
Date:10/23/2013

, which means that engineering devices on a nanoscale that can selectively transfer electrons to the Pi-symmetry orbitals should trigger an insulator to metal transition."

This study was made possible by the X-ray beams at ALS beamline 4.0.2, which penetrated the vanadium dioxide thin films to a depth of about five nanometers, providing a bulk-sensitive probe with minimal effects from surface adsorbates.

Elke Arenholz, an ALS scientist who manages beamline 4.0.2, explains. "It was crucial for the experiment to be performed at a beamline where the orientation of the beam could be changed from parallel to perpendicular without moving the sample. Moreover, beamline 4.0.2 also provided the stability and accuracy needed to measure nanoscale effects."


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Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

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