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Paper
Commensurate-incommensurate and rotational transitions of monolayer xenon on single-crystal graphite
Abstract
We have studied the structures and transitions of high-density xenon monolayers on single-crystal graphite using high-resolution synchrotron x-ray diffraction techniques. In contrast to the previous x-ray experiment, we find that at low temperatures, the xenon has a commensurate 3×3R 30°structure for a broad range of coverages. With decreasing temperature the novel reentrant sequence: aligned rotated aligned, occurs; this sequence is followed by a first-order incommensurate-commensurate transition. © 1987 The American Physical Society.