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Abstract
Diamondoids are unique molecular nano-materials with diamond structure and fascinating properties such as negative electron affinity and short electron mean free paths. A thin layer of diamondoids deposited on a cathode is able to act as an electron monochromator, reducing the energy spread of photo-emitted electrons from a surface. This property can be applied effectively to improve the spatial resolution in x-ray photoemission electron microscopy (X-PEEM), which is limited by chromatic aberration of the electron optics. In this paper, we present X-PEEM measurements reaching the technological relevant spatial resolution of 10 nm without the need of expensive and complex corrective optics. Our results provide a simple approach to image surface chemical and magnetic information at nanometer scales by employing diamondoids.
The work at the Stanford Institute for Materials and Energy Sciences was supported by the DOE Office of Basic Energy Sciences, Division of Materials Sciences. SSRL/SLAC is a user facility within the Office of Science operated for the U.S. Department of Energy Office of Science by Stanford University, The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The work in Giessen (Germany) was also supported by a grant through the German Research Foundation coupled with the National Science Foundation of the USA (DFG-NSF).
Key Topics
- Spatial resolution
- 16.0
- Photons
- 9.0
- X-ray microscopy
- 9.0
- Gold
- 8.0
- X-ray microscopes
- 8.0
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