Oxygen-induced p(3×1) reconstruction of the W(100) surface
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چکیده
The oxidation of the W(100) surface at elevated temperatures has been studied using room temperature STM and LEED. High exposure of the clean surface to O2 at 1500 K followed by flash-annealing to 2300 K in UHV results in the formation of a novel p(3×1) reconstruction, which is imaged by STM as a missing-row structure on the surface. Upon further annealing in UHV, this surface develops a floreted LEED pattern characteristic of twinned microdomains of monoclinic WOx, while maintaining the p(3×1) missing-row structure. Atomically resolved STM images of this surface show a complex domain structure with single and double W〈010〉 rows coexisting on the surface in different domains.
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تاریخ انتشار 2011