Published August 1, 1994
| Version v1
Journal article
Dynamics of commensurate chromium alloys
Creators
- 1. Department of Physics, North Dakota State University, Fargo, North Dakota 58105-5566 (United States)
- 2. Solid State Division, P.O. Box 2008, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
Description
The dynamics of commensurate chromium alloys are produced by the fluctuations of a spin-density wave consisting of bound electron-hole pairs. For a commensurate alloy at any temperature, we find a transverse spin-wave (SW) mode with frequency ω=cq and a longitudinal amplitude mode with dispersion ω=2√Δ2+(cq)2/4, where c=vF/√3 is the SW mode velocity and 2Δ is the energy required to break apart an electron-hole pair. Unlike in an itinerant ferromagnet, the SW and amplitude modes never intersect. Other fluctuations below the SW mode and above the amplitude mode are intrinsically damped in an itinerant antiferromagnet
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 50
- Journal Issue
- 6
- Journal Page Range
- p. 4240-4243.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25075243
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANTIFERROMAGNETISM; CHROMIUM ALLOYS; DISPERSION RELATIONS; ELECTRON-HOLE DROPLETS; FERROMAGNETISM; FLUCTUATIONS; SPIN WAVES
- Descriptors DEC
- ALLOYS; MAGNETISM; VARIATIONS