Long-wavelength anomalous diffusion mode in the two-dimensional XY dipole magnet Academic Article

abstract

• In a two-dimensional (Formula presented) ferromagnet the dipole force induces a strong interaction between spin waves in the long-wavelength limit. The major effect of this interaction is the transformation of a propagating spin wave into a diffusion mode. We study the anomalous dynamics of such diffusion modes. We find that the Janssen-De Dominics functional, which governs this dynamics, approaches the non-Gaussian fixed point. A spin wave propagates by an anomalous anisotropic diffusion with the dispersion relation: (Formula presented) and (Formula presented), where (Formula presented) and (Formula presented). The low-frequency response to the external magnetic field is found. 1997 The American Physical Society.

authors

• Abanov, Artem

published proceedings

• PHYSICAL REVIEW B

author list (cited authors)

• Abanov, A., Kashuba, A., & Pokrovsky, V. L.

citation count

• 5

complete list of authors

• Abanov, A||Kashuba, A||Pokrovsky, VL

publication date

• August 1997

publisher

• American Physical Society (APS)  Publisher

published in

• Physical Review B (Condensed Matter)  Journal

keywords

• 51 Physical Sciences
• 5103 Classical Physics

Digital Object Identifier (DOI)

• 10.1103/PhysRevB.56.3181

URI

• http://dx.doi.org/10.1103/PhysRevB.56.3181

start page

• 3181

end page

• 3195

volume

• 56

issue

• 6

URL

• http://dx.doi.org/10.1103/physrevb.56.3181