Abstract
We present the quasiparticle energy and optical absorption spectrum results of 1D linear H, BN, C, and Au chains, which are the lower size limit of a periodic material, by using ab initio many-body approaches. Unprecedentedly large quasiparticle corrections and excitonic effects are revealed in these extreme systems compared with quasi-1D, 2D, and 3D periodic systems. The binding energy of the bound exciton is up to 3.55eV in the semiconducting BN chain and 0.5eV in the metallic C chain, the latter of which is the largest in a metallic system.
Original language | English |
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Pages (from-to) | 1636-1643 |
Number of pages | 8 |
Journal | Physica Status Solidi (B): Basic Research |
Volume | 250 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 2013 |
Externally published | Yes |
Keywords
- Excitons
- Linear atomic chains
- Many-body effects
- Optical absorption
- Quasiparticles