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|Author(s):||Steven W. Robey;|
|Title:||Mg/GaAs(001): A Highly Anisotropic Reaction Morphology|
|Published:||December 31, 1999|
|Abstract:||The spontaneous growth of one-dimensional structures during reaction of Mg on GaAs(001) 4x2 Ga-stabilized surface was observed by in situ electron diffraction and ex situ atomic force microscopy (AFM). Reaction led to growth of an epitaxial, cubic phase with a lattice constant of 0.62+/-0.02 nm. Atomic force microscopy revealed structures elongated along . We propose a mechanism for the formation of these features by migration of Ga or Ga-rich droplets that enhance the reaction of Mg with GaAs to form a ridge of Mg3As2 with alignment along  due either to strain or chemical anisotropy.|
|Citation:||Applied Physics Letters|
|Pages:||pp. 1754 - 1756|
|Keywords:||GaAs(001),Mg,reaction vapor-liquid solid,thin films,VLS|