|Introduction to STM
Hydrogen adsorption on Gadolinium
The brown, small and large objects that look like stones are islands of Gadolinium grown on tungsten. Where the surface appears blue, hydrogen has been adsorbed on it changing the surface electronic structure drastically.
The three color composite process was slightly different for this image than for the other ones: The topographic image was colorized via three current imaging spectroscopical images at different bias voltages.
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