Quasi free-standing silicene in a superlattice with hexagonal boron nitride
KAUST DepartmentComputational Physics and Materials Science (CPMS)
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Preprint Posting Date2013-10-29
Online Publication Date2013-11-12
Print Publication Date2013-12
Permanent link to this recordhttp://hdl.handle.net/10754/325394
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AbstractWe study a superlattice of silicene and hexagonal boron nitride by first principles calculations and demonstrate that the interaction between the layers of the superlattice is very small. As a consequence, quasi free-standing silicene is realized in this superlattice. In particular, the Dirac cone of silicene is preserved. Due to the wide band gap of hexagonal boron nitride, the superlattice realizes the characteristic physical phenomena of free-standing silicene. In particular, we address by model calculations the combined effect of the intrinsic spin-orbit coupling and an external electric field, which induces a transition from a semimetal to a topological insulator and further to a band insulator.
CitationKaloni TP, Tahir M, Schwingenschlögl U (2013) Quasi free-standing silicene in a superlattice with hexagonal boron nitride. Sci Rep 3. doi:10.1038/srep03192.
PubMed Central IDPMC3824161
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