Propagation of spin waves through a Neel domain wall
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F20%3APU137366" target="_blank" >RIV/00216305:26620/20:PU137366 - isvavai.cz</a>
Result on the web
<a href="https://aip.scitation.org/doi/full/10.1063/5.0013692" target="_blank" >https://aip.scitation.org/doi/full/10.1063/5.0013692</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0013692" target="_blank" >10.1063/5.0013692</a>
Alternative languages
Result language
angličtina
Original language name
Propagation of spin waves through a Neel domain wall
Original language description
Spin waves have the potential to be used as a next-generation platform for data transfer and processing as they can reach wavelengths in the nanometer range and frequencies in the terahertz range. To realize a spin-wave device, it is essential to be able to manipulate the amplitude as well as the phase of spin waves. Several theoretical and recent experimental works have also shown that the spin-wave phase can be manipulated by the transmission through a domain wall (DW). Here, we study propagation of spin waves through a DW by means of micro-focused Brillouin light scattering microscopy (mu BLS). The 2D spin-wave intensity maps reveal that spin-wave transmission through a Neel DW is influenced by a topologically enforced circular Bloch line in the DW center and that the propagation regime depends on the spin-wave frequency. In the first regime, two spin-wave beams propagating around the circular Bloch line are formed, whereas in the second regime, spin waves propagate in a single central beam through the circular Bloch line. Phase-resolved mu BLS measurements reveal a phase shift upon transmission through the domain wall for both regimes. Micromagnetic modeling of the transmitted spin waves unveils a distortion of their phase fronts, which needs to be taken into account when interpreting the measurements and designing potential devices. Moreover, we show that, by means of micromagnetic simulations, an external magnetic field can be used to move the circular Bloch line within the DW and to manipulate spin-wave propagation.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/LM2018110" target="_blank" >LM2018110: CzechNanoLab research infrastructure</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Physics Letters
ISSN
0003-6951
e-ISSN
1077-3118
Volume of the periodical
117
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
„022405-1“-„022405-5“
UT code for WoS article
000553109200001
EID of the result in the Scopus database
—