Abstract
We investigate the effects of vacancies on the electronic and magnetic properties in fully-hydrogenated boron nitride sheet by performing first-principles calculation. Our results reveal that this sheet fosters magnetic materials with finite magnetic moment under certain vacancies. This phenomenon can be explained by the charge redistribution in which the unpaired electrons in bands determine the magnitude of magnetic moment and thus the ground state of the systems. The magnetic moment can be tuned from 0 to 2 by introducing different vacancies. This picture explicitly demonstrates that the type of vacancy plays an important role in determining nonmagnetic or magnetic materials of fully-hydrogenated boron nitride sheet, indicating their functionalities and possible applications in spintronics.
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