Abstract
We report a well-resolved ESR signal of 0.01 L NO 2 molecules physisorbcd on a 10 L krypton layer on Ag(110) at 20 K. In situ LEED and AES were used to characterize the surface. To the best of our knowledge, these are the first experiments where surface-analytical methods and ESR in UHV are combined. The analysis of the spectra for low coverage shows that the molecules lie flat on the surface, without molecular rotation. The dependence of the signal on the NO 2 coverage is described. No signal could be seen after adsorption of NO 2 on the clean Ag(110) surface.
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