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Meyerheim, H. L., Sander, D., Popescu, R., Steadman, P., Ferrer, S., Kirschner, J.

Interlayer relaxation of W(110) studied by surface X-ray diffraction
Surface Science 475, (1-3),pp 103-108 Elsevier Science, (2001)
The structure of the clean, unreconstructed W(1 1 0) surface was investigated by surface X-ray diffraction. The analysis of the integer order crystal truncation rods up to a maximum momentum transfer of four reciprocal lattice units indicates a contraction of the first interlayer distance by Dd12=-2.7(5)% relative to the bulk interlayer distance (d bulk=2.238 Å). The relaxation of the second interlayer spacing is found to be smaller than 0.3% . Within the error bars our results agree with recent low energy electron diffraction studies. However, Dd12 is lower than predicted by recent calculations (-4.1% ).

ki-2001-i01