Phys. Rev. Lett. 79, 3934–3937 (1997)Reconstructions of the GaN(0001̅ ) SurfaceReceived 20 June 1997; published in the issue dated 17 November 1997 Reconstructions of the GaN(0001̅ ) surface are studied for the first time. Using scanning tunneling microscopy and reflection high-energy electron diffraction, four primary structures are observed: 1×1,3×3,6×6, and c(6×12). On the basis of first-principles calculations, the 1×1 structure is shown to consist of a Ga monolayer bonded to a N-terminated GaN bilayer. From a combination of experiment and theory, it is argued that the 3×3 structure is an adatom-on-adlayer structure with one additional Ga atom per 3×3 unit cell. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.79.3934
DOI:
10.1103/PhysRevLett.79.3934
PACS:
68.35.Bs, 61.16.Ch, 68.55.Jk
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.