A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is
Correlation effects in a band ferromagnet: Spin-rotationally-symmetric study with self-energy and vertex corrections
Physical Review B
First-order quantum corrections to the transverse spin-fluctuation propagator are obtained within a systematic inverse-degeneracy 1/N expansion, which provides a spin-rotationally symmetric scheme for including self-energy and vertex corrections while preserving the Goldstone mode. An expression is obtained for the spin-wave stiffness constant including all first-order quantum corrections, and the dominant contribution is shown to yield a strong reduction due to a correlation-induceddoi:10.1103/physrevb.74.224437 fatcat:epfccjmcwzgebfzno5el6t4ndy