Journal
JOURNAL OF APPLIED PHYSICS
Volume 110, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3651154
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- Grants-in-Aid for Scientific Research [22246037] Funding Source: KAKEN
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First-principles calculations are carried out to estimate the spontaneous polarization and the energy band gap bowing in YxAlyGa1-x-yN alloys lattice-matched to GaN. The ground state properties of alloys are computed by using the pseudopotential-planewave method in conjunction with generalized gradient approximation to density functional theory. We find nonlinear behavior of the spontaneous polarization and the band gap energies in YxAlyGa1-x-yN alloys and the values depend on the atomic geometry in the unit cell, especially on that of yttrium. (C) 2011 American Institute of Physics. [doi:10.1063/1.3651154]
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