The Library
Dispersionless spin waves and underlying field-induced magnetic order in gadolinium gallium garnet
Tools
Tools
Tools
D’Ambrumenil, Nicholas, Petrenko, Oleg, Mutka, H. and Deen, P. P. (2015) Dispersionless spin waves and underlying field-induced magnetic order in gadolinium gallium garnet. Physical Review Letters, 114 (22). 227203 . doi:10.1103/PhysRevLett.114.227203 ISSN 0031-9007.
|
PDF
WRAP-dispersionless-spin-waves-Petrenko-2017.pdf - Published Version - Requires a PDF viewer. Download (879Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevLett.114.227203
Abstract
We report the results of neutron diffraction and inelastic neutron scattering on a powder sample of Gd3Ga5O12 at high magnetic fields. Analysis of the diffraction data shows that in high fields (B ≳ 1.8 T) the spins are not fully aligned, but are canted slightly as a result of the dipolar interaction. The magnetic phase for fields ≲1.8 T is characterized by antiferromagnetic peaks at (210) and an incommensurate wave vector. The dominant contribution to inelastic scattering at large momentum transfers is from a band of almost dispersionless excitations. We show that these correspond to the spin waves localized on ten site rings, expected on the basis of nearest neighbor exchange interaction, and that the spectrum at high fields B ≳ 1.8 T is well described by a spin wave theory.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Gadolinium compounds -- Magnetic properties | ||||
| Journal or Publication Title: | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 2 June 2015 | ||||
| Dates: |
|
||||
| Volume: | 114 | ||||
| Number: | 22 | ||||
| Article Number: | 227203 | ||||
| DOI: | 10.1103/PhysRevLett.114.227203 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Copyright Holders: | American Physical Society | ||||
| Date of first compliant deposit: | 24 April 2017 | ||||
| Date of first compliant Open Access: | 25 April 2017 |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
