Tensor low energy electron diffraction study for the structure of a Cr(001)-p-(1×1)-N surface

Abstract

The structure of the Cr(001)-p-(1×1)-N surface was studied by use of the tensor low energy electron diffraction (LEED) current-voltage (I–V) analysis. From the LEED diffraction pattern observed in the process of cleaning of the Cr(001) surface, N was found to form a (1×1) structure on the Cr(001) surface. Experimental I–V characteristic curves for the Cr(001)-p-(1×1)-N structure were generated by Video LEED System and these experimental results were compared with that obtained through theoretical calculations via the TLEED program to analyze surface structure. As a result, we found that N is adsorbed in the hollow site on the Cr(001) surface. The interlayer distances of dN1, d12, and d23 are found to be 0.251, 1.814, and 1.410 Å, respectively.