Journal
PHYSICAL REVIEW B
Volume 88, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.144420
Keywords
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Funding
- Presidium of the National Academy of Sciences of Ukraine [VTs/157, 0113U001823]
- State Foundation of Fundamental Research of Ukraine [F33.2/002, F53.2/045]
- ARO
- RIKEN iTHES Project
- MURI Center for Dynamic Magneto-Optics
- JSPS-RFBR [12-02-92100]
- MEXT Kakenhi on Quantum Cybernetics
- Funding Program for Innovative R&D on ST (FIRST)
- Grants-in-Aid for Scientific Research [21102002, 22224007] Funding Source: KAKEN
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We analyze theoretically the novel pathway of ultrafast spin dynamics for ferromagnets with high enough single-ion anisotropy. This longitudinal spin dynamics includes the coupled oscillations of the modulus of the magnetization together with the quadrupolar spin variables, which are expressed through quantum expectation values of operators bilinear on the spin components. Even for a simple single-element ferromagnet, such dynamics can lead to a magnetization reversal under the action of an ultrashort laser pulse.
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