| Issue |
Europhys. Lett.
Volume 69, Number 6, March 2005
|
|
|---|---|---|
| Page(s) | 978 - 983 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10432-x | |
| Published online | 11 February 2005 | |
Ground states and photoemission spectra in a magnetic frustrated organic chain
1
Department of Physics, Wuhan University - Wuhan 430072, PRC
2
Department of Physics, Huazhong University of Science and Technology Wuhan 430072, PRC
Corresponding author: wzwang@whu.edu.cn
Received:
3
May
2004
Accepted:
14
January
2005
The magnetic frustration in a quasi–one-dimensional organic polymer is studied. The results show that if the frustrating hopping is turned on, three ground-state phases are found: a ferrimagnetic phase, two singlet phases. Two nearly degenerate states with one sublattice forming spin singlet are also discussed. The difference of phase diagrams between the present Hubbard model and the Heisenberg model results from the appearance of charge order in the Hubbard model. Due to the frustration, the particle-hole symmetry in the single-particle spectra is destroyed. The relation between the spectral functions and the spin configurations are investigated for different phases.
PACS: 71.27.+a – Strongly correlated electron systems; heavy fermions / 75.30.Fv – Spin-density waves / 71.10.Fd – Lattice fermion models (Hubbard model, etc.)
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.