Doping of a spin-1 chain
An integrable model
- authored by
- Holger Frahm, Markus P. Pfannmüller, A. M. Tsvelik
- Abstract
An exactly soluble model describing a spin S = 1 antiferromagnetic chain doped with mobile S = 1/2 carriers is constructed. In its continuum limit the undoped state is described by three gapless Majorana fermions composing the SU(2) triplet. Doping adds a scalar charge field and a singlet Majorana fermion with different velocity. We argue that this mode survives when the Haldane gap is added.
- Organisation(s)
-
Institute of Theoretical Physics
- External Organisation(s)
-
University of Oxford
- Type
- Article
- Journal
- Physical Review Letters
- Volume
- 81
- Pages
- 2116-2119
- No. of pages
- 4
- ISSN
- 0031-9007
- Publication date
- 07.09.1998
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- General Physics and Astronomy
- Electronic version(s)
-
https://arxiv.org/abs/cond-mat/9803145 (Access:
Open)
https://doi.org/10.1103/PhysRevLett.81.2116 (Access: Unknown)
https://doi.org/10.15488/5084 (Access: Open)
