| Download | - View final version: Two-magnon scattering in the 5d all-in-all-out pyrochlore magnet Cd2Os2O7 (PDF, 974 KiB)
|
|---|
| DOI | Resolve DOI: https://doi.org/10.1038/s41467-017-00228-w |
|---|
| Author | Search for: Nguyen, Thi Minh Hien; Search for: Sandilands, Luke J.1; Search for: Sohn, C. H.; Search for: Kim, C. H.; Search for: Wysocki, Aleksander L.; Search for: Yang, In-Sang; Search for: Moon, S. J.; Search for: Ko, Jae-Hyeon; Search for: Yamaura, J.; Search for: Hiroi, Z.; Search for: Noh, Tae Won |
|---|
| Affiliation | - National Research Council of Canada. Measurement Science and Standards
|
|---|
| Format | Text, Article |
|---|
| Abstract | 5d pyrochlore oxides with all-in-all-out magnetic order are prime candidates for realizing strongly correlated, topological phases of matter. Despite significant effort, a full understanding of all-in-all-out magnetism remains elusive as the associated magnetic excitations have proven difficult to access with conventional techniques. Here we report a Raman spectroscopy study of spin dynamics in the all-in-all-out magnetic state of the 5d pyrochlore Cd2Os2O7. Through a comparison between the two-magnon scattering and spin-wave theory, we confirm the large single ion anisotropy in this material and show that the Dzyaloshinskii–Moriya and exchange interactions play a significant role in the spin-wave dispersions. The Raman data also reveal complex spin–charge–lattice coupling and indicate that the metal–insulator transition in Cd2Os2O7 is Lifshitz-type. Our work establishes Raman scattering as a simple and powerful method for exploring the spin dynamics in 5d pyrochlore magnets. |
|---|
| Publication date | 2017-08-15 |
|---|
| Publisher | Nature Publishing Group |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NPARC number | 23003450 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 5ef1adf4-4f70-42e6-8572-396a059ced58 |
|---|
| Record created | 2018-06-28 |
|---|
| Record modified | 2020-05-30 |
|---|
