Abstract
Two-dimensional graphite sheets with a certain type of edges are known to support boundary states localized near the edges. Forming a flat band with a sharp peak in the density of states at the Fermi energy, they can trigger a magnetic instability or a distortion of the lattice in the presence of electron-electron or electron-phonon interactions. We shall discuss a relationship between chiral symmetry, which is the origin of the zero-energy edge states, and several types of induced orders such as spin density waves or lattice distortions. We also investigate electron correlation effects on the edge states for a wrapped quasi one-dimensional geometry, i.e., carbon nanotube, by means of the renormalization group and the open boundary bosonization.
| Original language | American English |
|---|---|
| Pages (from-to) | 679-683 |
| Number of pages | 5 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 22 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - Apr 2004 |
| Externally published | Yes |
| Event | 15th International Conference on ELectronic Propreties - Nara, Japan Duration: Jul 14 2003 → Jul 18 2003 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
Keywords
- Carbon nanotube
- Chiral symmetry
- Chiral symmetry breaking
- Edge states