Physics – Condensed Matter – Materials Science
Scientific paper
2009-02-13
Phys. Rev. B 79, 184113 (2009)
Physics
Condensed Matter
Materials Science
5 pages, 4 figures
Scientific paper
Using X-ray diffuse scattering, we investigate the critical behavior of an order-disorder phase transition in a defective "skin-layer" of V2H. In the skin-layer, there exist walls of dislocation lines oriented normal to the surface. The density of dislocation lines within a wall decreases continuously with depth. We find that, because of this inhomogeneous distribution of defects, the transition effectively occurs at a depth-dependent local critical temperature. A depth-dependent scaling law is proposed to describe the corresponding critical ordering behavior.
Bai Jianming
Bassler Kevin E.
Del Genio Charo I.
Haeffner Dean R.
Moss Simon C.
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