Phys. Rev. B 62, 2681–2685 (2000)Origin of optical anisotropies of nonpolar GaN surfacesReceived 13 December 1999; published in the issue dated 15 July 2000 We investigate the origin of optical anisotropies of the nonpolar GaN (110) and (101¯0) surfaces. Using semiempirical tight-binding calculations, we analyze in detail the main optical signature of each surface. The origin of the optical spectra is discussed in terms of the main surface electronic states and of the specific surface atomic rearrangement. Results of the surface dielectric function, and reflectance anisotropy spectra, are presented. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.62.2681
DOI:
10.1103/PhysRevB.62.2681
PACS:
73.61.Ey, 71.15.Fv, 73.20.At, 78.66.Fd
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