|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Multiple magnon modes in the Co$_3$Sn$_2$S$_2$ Weyl semimetal candidate | | O.O. Shvetsov
; V.D. Esin
; A.V. Timonina
; N.N. Kolesnikov
; E.V. Deviatov
; | | Date: |
16 Apr 2019 | | Abstract: | We experimentally investigate electron transport in kagome-lattice
ferromagnet Co$_3$Sn$_2$S$_2$, which is regarded as a time reversal symmetry
broken Weyl semimetal candidate. We demonstrate $dV/dI(I)$ curves with
pronounced asymmetric $dV/dI$ spikes, similar to those attributed to
current-induced spin-wave excitations in ferromagnetic multilayers. In contrast
to multilayers, we observe several $dV/dI$ spikes’ sequences at low,
$approx$10$^4$ A/cm$^2$, current densities for a thick single-crystal
Co$_3$Sn$_2$S$_2$ flake in the regime of fully spin-polarized bulk. The
observed behavior necessarily requires a distinct magnetic structure with a
small total spin value, so we attribute $dV/dI$ spikes to multiple magnon
branches in Co$_3$Sn$_2$S$_2$ Weyl surface states. We demonstrate splitting of
the magnon branches in high magnetic fields, which may reflect reconstruction
of spin textures in the surface state due to the spin-momentum locking.
Presence of spin-transfer effects at low current densities in Co$_3$Sn$_2$S$_2$
makes the material attractive for applications in spintronics. | | Source: | arXiv, 1904.7762 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER