We report on total-energy electronic-structure calculations within the density-functional theory performed for an atomic wire consisting of Ga atoms which are deposited on hydrogenated Si(100) surfaces. We find that there are three distinct stable atomic structures and that the ground state is magnetic in one of the three structures. Stability of the magnetic state against carrier doping and charge-density-wave generation is discussed.
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Okada et al. (2000) studied this question.
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