Bibliographic Details
| Title: |
Resonances in a dilute gas of magnons and metamagnetism of isotropic frustrated ferromagnetic spin chains |
| Authors: |
Arlego, M., Heidrich-Meisner, F., Honecker, A., Rossini, G., Vekua, T. |
| Source: |
Phys. Rev. B 84, 224409 (2011) |
| Publication Year: |
2011 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Strongly Correlated Electrons |
| More Details: |
We show that spin-S chains with SU(2)-symmetric, ferromagnetic nearest-neighbor and frustrating antiferromagnetic next-nearest-neighbor exchange interactions exhibit metamagnetic behavior under the influence of an external magnetic field for small S, in the form of a first-order transition to the fully polarized state. The corresponding magnetization jump increases gradually starting from an S-dependent critical value of exchange couplings and takes a maximum in the vicinity of a ferromagnetic Lifshitz point. The metamagnetism results from resonances in the dilute magnon gas caused by an interplay between quantum fluctuations and frustration.
Comment: 12 pages RevTex4, 9 eps figures: Extended version, to appear in Phys. Rev. B |
| Document Type: |
Working Paper |
| DOI: |
10.1103/PhysRevB.84.224409 |
| Access URL: |
http://arxiv.org/abs/1105.5626 |
| Accession Number: |
edsarx.1105.5626 |
| Database: |
arXiv |
