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Probing short-range magnetic order in a geometrically frustrated magnet by means of the spin Seebeck effect
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Liu, Changjiang, Wu, Stephen M., Pearson, John E., Jiang, J. Samuel, d'Ambrumenil, N. and Bhattacharya, Anand (2018) Probing short-range magnetic order in a geometrically frustrated magnet by means of the spin Seebeck effect. Physical Review B (Condensed Matter and Materials Physics), 98 (6). 060415(R). doi:10.1103/PhysRevB.98.060415 ISSN 1098-0121.
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WRAP-probing-short-range-magnetic-order-geometrically-frustrated-magnet-means-spin-Seebeck-effect-Ambrumenil-2018.pdf - Accepted Version - Requires a PDF viewer. Download (1181Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevB.98.060415
Abstract
The spin Seebeck effect (SSE) is a phenomenon where a spin current is generated from thermal excitations in magnetic materials. It is believed that magnetic long-range order (LRO) is not required for SSE, while short-ranged order (SRO) plays an important role. However, a definitive experimental demonstration of the connection between the SSE and SRO has been missing. Here, we show that the SSE is able to probe a specific SRO in a model geometrically frustrated magnet Gd 3 Ga 5 O 12 (GGG). A field-induced SRO in GGG is detected by the SSE in the temperature range 2–5 K. The origin of the SRO is verified by comparing the SSE data directly to existing neutron scattering measurements at much lower temperatures ( T < 0.9 K), where field-induced LRO exists. Our theoretical calculations of the magnetic structure further confirm the anisotropic field dependence of the SRO in GGG. These findings establish that the SSE can serve as an effective probe of SRO in geometrically frustrated magnets.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 1098-0121 | ||||||
| Official Date: | 28 August 2018 | ||||||
| Dates: |
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| Volume: | 98 | ||||||
| Number: | 6 | ||||||
| Article Number: | 060415(R) | ||||||
| DOI: | 10.1103/PhysRevB.98.060415 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Reuse Statement (publisher, data, author rights): | © 2018 American Physical Society | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Date of first compliant deposit: | 27 November 2018 | ||||||
| Date of first compliant Open Access: | 27 November 2018 |
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