Determination of wurtzite GaN lattice polarity based on surface reconstruction
Applied Physics Letters1998Vol. 72(17), pp. 2114–2116
Citations Over TimeTop 1% of 1998 papers
Arthur R. Smith, R. M. Feenstra, David W. Greve, M. Shin, Marek Skowroński, Jörg Neugebauer, John E. Northrup
Abstract
We identify two categories of reconstructions occurring on wurtzite GaN surfaces, the first associated with the N face, (0001̄), and the second associated with the Ga face, (0001). Not only do these two categories of reconstructions have completely different symmetries, but they also have different temperature dependence. It is thus demonstrated that surface reconstructions can be used to identify lattice polarity. Confirmation of the polarity assignment is provided by polarity-selective wet chemical etching of these surfaces.
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