Spiral magnetism and collective excitations in doped Hubbard models
Journal Article
·
· Journal of Low Temperature Physics
- Universitaet zu Koeln (Germany)
We discuss the ground state properties and the collective dynamics of spiral magnetic states in the two dimensional Hubbard model. In particular we present the phase diagram in the presence of a finite next-nearest-neighbor hopping integral t{prime}. In contrast to the plain t Hubbard-model we find a region of stable antiferromagnetism in an extended interval of electron (hole) doping off half filling for a negative (positive) ratio of t{prime}/t. In addition we investigate the coupled charge and spiral spin-excitations off half filling. The resulting collective modes are found to be highly anisotropic and strongly Landau damped.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 107584
- Report Number(s):
- CONF-9409365--
- Journal Information:
- Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 3-4 Vol. 99; ISSN JLTPAC; ISSN 0022-2291
- Country of Publication:
- United States
- Language:
- English
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