Charge-injection induced magnetism and half metallicity in single-layer hexagonal group III/V (BN, BP, AlN, AlP) systems

Menghao Wu, Zhuhua Zhang, Xiao Cheng Zeng

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Abstract

Based on the first-principles calculations, we predict that strong ferromagnetism and half metallicity can be induced via charge injection in single-layer hexagonal boron nitride (BN) and BN nanoribbons. This phenomenon can be understood based on the Stoner criterion and the relationship between induced magnetic moment and charge density. Other group-III/V two-dimensional honeycomb systems such as boron phosphide (BP), aluminum nitride (AlN), and aluminum phosphide (AIP) exhibit similar ferromagnetic behavior upon charge injection. Like BN, the single-layer hexagonal AlN can be converted to a half metal at certain positive charge states.

Original languageEnglish (US)
Article number093109
JournalApplied Physics Letters
Volume97
Issue number9
DOIs
StatePublished - Aug 30 2010

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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