Nonlocal exchange interaction removes half-metallicity in graphene nanoribbons.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 17602536.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Band gap studies of zigzag-edge graphene ribbons are presented. While earlier calculations at LDA level show that zigzag-edge graphene ribbons become half-metallic when cross-ribbon electric fields are applied, our calculations with hybrid density functional demonstrate that finite graphene ribbons behave as half-semiconductors. The spin-dependent band gap can be changed in a wide range, making possible many applications in spintronics.
Medical subject headings
- Carbon
- Crystallization
- Models, Chemical
- Models, Molecular
- Nanotubes