M. Needels, J.D. Joannopoulos, et al.
Physical Review B
The role of chemical potentials in surface reconstructions is examined and shown to be crucial for binary semiconductor srufaces such as GaAs(111)2×2. We predict that under As-rich conditions a new model, the As triangle, is the lowest-energy geometry, whereas the Ga-vacancy model is appropriate for Ga-rich conditions. A change in the relative chemical potential of Ga and As should produce a phase transition between the two structures. © 1986 The American Physical Society.
M. Needels, J.D. Joannopoulos, et al.
Physical Review B
Ph. Avouris, In-Whan Lyo, et al.
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
K.C. Pandey
Physical Review Letters
K.C. Pandey, Efthimios Kaxiras
Physical Review Letters