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Sökning: onr:"swepub:oai:DiVA.org:su-216449" > Coupling of teraher...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003201naa a2200457 4500
001oai:DiVA.org:su-216449
003SwePub
008230505s2023 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2164492 URI
0247 a https://doi.org/10.1038/s41567-022-01908-12 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Salikhov, Ruslan4 aut
2451 0a Coupling of terahertz light with nanometre-wavelength magnon modes via spin-orbit torque
264 c 2023-01-30
264 1b Springer Science and Business Media LLC,c 2023
338 a print2 rdacarrier
520 a Spin-based technologies can operate at terahertz frequencies but require manipulation techniques that work at ultrafast timescales to become practical. For instance, devices based on spin waves, also known as magnons, require efficient generation of high-energy exchange spin waves at nanometre wavelengths. To achieve this, a substantial coupling is needed between the magnon modes and an electro-magnetic stimulus such as a coherent terahertz field pulse. However, it has been difficult to excite non-uniform spin waves efficiently using terahertz light because of the large momentum mismatch between the submillimetre-wave radiation and the nanometre-sized spin waves. Here we improve the light–matter interaction by engineering thin films to exploit relativistic spin–orbit torques that are confined to the interfaces of heavy metal/ferromagnet heterostructures. We are able to excite spin-wave modes with frequencies of up to 0.6 THz and wavelengths as short as 6 nm using broadband terahertz radiation. Numerical simulations demonstrate that the coupling of terahertz light to exchange-dominated magnons originates solely from interfacial spin–orbit torques. Our results are of general applicability to other magnetic multilayered structures, and offer the prospect of nanoscale control of high-frequency signals.
650 7a NATURVETENSKAPx Fysikx Annan fysik0 (SwePub)103992 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Other Physics Topics0 (SwePub)103992 hsv//eng
7001 a Ilyakov, Igor4 aut
7001 a Körber, Lukas4 aut
7001 a Kákay, Attila4 aut
7001 a Gallardo, Rodolfo A.4 aut
7001 a Ponomaryov, Alexey4 aut
7001 a Deinert, Jan-Christoph4 aut
7001 a de Oliveira, Thales V. A. G.4 aut
7001 a Lenz, Kilian4 aut
7001 a Fassbender, Jürgen4 aut
7001 a Bonetti, Stefanou Stockholms universitet,Fysikum,Ca’ Foscari University of Venice, Italy4 aut0 (Swepub:su)sbone
7001 a Hellwig, Olav4 aut
7001 a Lindner, Jürgen4 aut
7001 a Kovalev, Sergey4 aut
7102 a Stockholms universitetb Fysikum4 org
7730 t Nature Physicsd : Springer Science and Business Media LLCg 19:4, s. 529-535q 19:4<529-535x 1745-2473x 1745-2481
8564 u https://doi.org/10.1038/s41567-022-01908-1y Fulltext
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-216449
8564 8u https://doi.org/10.1038/s41567-022-01908-1

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