Theoretical Analysis of Inertia-like Switching in Magnets: Applications to a Synthetic Antiferromagnet

Theoretical Analysis of Inertia-like Switching in Magnets : Applications to a Synthetic Antiferromagnet

The magnetization dynamics of a synthetic antiferromagnet subjected to a short-magnetic-field pulse has been studied by using a combination of first principles calculations and atomistic spin-dynamics simulations. We observe switching phenomena on the time scale of tens of picoseconds, and inertia-like behavior in the magnetization dynamics. We explain the latter in terms of a dynamic redistribution of magnetic energy from the applied-field pulse to other possible energy terms, such as the exchange interaction and the magnetic anisotropy, without invoking concepts such as the inertia of an antiferro-magnetic vector. We also demonstrate that such dynamics can also be observed in a ferromagnetic material where the incident-field pulse pumps energy to the magnetic anisotropy.

Bergman, AndersUppsala universitet,Materialteori(Swepub:uu)anber121 (författare)
Taroni, AndreaUppsala universitet,Materialteori(Swepub:uu)andta922 (författare)
Hellsvik, JohanUppsala universitet,Institutionen för fysik och astronomi (författare)
Sanyal, BiplabUppsala universitet,Materialteori(Swepub:uu)bisan676 (författare)
Eriksson, OlleUppsala universitet,Materialteori(Swepub:uu)olleerik (författare)
Uppsala universitetMaterialteori (creator_code:org_t)

Av författaren/redakt...: Bhattacharjee, S ...; Bergman, Anders; Taroni, Andrea; Hellsvik, Johan; Sanyal, Biplab; Eriksson, Olle

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.