"Diamondoid coating enables disruptive approach for chemical and magnetic imaging with 10 nm spatial resolution "

Hitoshi Ishiwata: Yves Acremann, Andreas Scholl, Eli Rotenberg, Olav Hellwig, Elizabeth Dobisz, Andrew Doran, Boryslav A. Tkachenko, Andrey A. Fokin, Peter R. Schreiner, Jeremy E. P. Dahl, Robert M. K. Carlson, Nick Melosh, Zhi-Xun Shen, and Hendrik Ohldag; Applied Physics Letters, 10/15/12.

Additional Authors: Yves Acremann, Andreas Scholl, Eli Rotenberg, Olav Hellwig, Elizabeth Dobisz, Andrew Doran, Boryslav A. Tkachenko, Andrey A. Fokin, Peter R. Schreiner, Jeremy E. P. Dahl, Robert M. K. Carlson, Nick Melosh, Zhi-Xun Shen, and Hendrik Ohldag

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.