Oct 15, 2004
Perturbative Calculation of the Spin-Wave Dispersion in a Disordered Double-Exchange Model
Journal of the Physical Society of Japan
- ,
- Volume
- 73
- Number
- 10
- First page
- 2646
- Last page
- 2649
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1143/jpsj.73.2646
- Publisher
- Physical Society of Japan
We study the spin-wave dispersion of localized spins in a disordered double-exchange model using the perturbation theory with respect to the strength of the disorder potential. We calculate the dispersion up to the next-leading order, and extensively examine the case of one dimension. We show that in that case, disorder yields anomalous gap-like behavior at the Fermi wave number of the conduction electrons.
- Link information
- ID information
-
- DOI : 10.1143/jpsj.73.2646
- ISSN : 0031-9015
- eISSN : 1347-4073
- CiNii Articles ID : 110001979184
- CiNii Books ID : AA00704814