Sökning: onr:"swepub:oai:gup.ub.gu.se/273622" >
Auto-oscillating Sp...
Auto-oscillating Spin-Wave Modes of Constriction-Based Spin Hall Nano-oscillators in Weak In-Plane Fields
-
- Mazraati, Hamid, Industrial PhD Student, 1989- (författare)
- KTH,Material- och nanofysik,NanOsc AB, SE-16440 Kista, Sweden
-
- Etesami, Seyyed (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden.
-
- Banuazizi, Seyed Amir Hossein (författare)
- KTH,Tillämpad fysik
-
visa fler...
-
- Chung, Sunjae (författare)
- KTH,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Tillämpad fysik
-
- Houshang, Afshin (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),NanOsc AB, SE-16440 Kista, Sweden.;Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden.
-
- Awad, Ahmad (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),NanOsc AB, SE-16440 Kista, Sweden.;Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden.
-
- Dvornik, Mykola (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),NanOsc AB, SE-16440 Kista, Sweden.;Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden.
-
- Åkerman, Johan, 1970 (författare)
- KTH,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Tillämpad fysik,NanOsc AB, SE-16440 Kista, Sweden.;;Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden.
-
visa färre...
-
(creator_code:org_t)
- American Physical Society, 2018
- 2018
- Engelska.
-
Ingår i: Physical Review Applied. - : American Physical Society. - 2331-7019. ; 10:5
- Relaterad länk:
-
https://gup.ub.gu.se...
-
visa fler...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- We experimentally study the auto-oscillating spin-wave modes in Ni(80)Fc(20)/beta-W constriction-based spin Hall nano-oscillators as a function of bias current, strength of the in-plane applied field, and azimuthal field angle in the low-field range of 40-80 mT. We observe two different spin-wave modes: (i) a linearlike mode confined to the internal field minima near the edges of the nanoconstriction, and only weakly dependent on the bias current and the applied-field angle, and (ii) a second, lower-frequency mode with significantly higher threshold current and stronger dependence on both the bias current and the externalfield angle. Micromagnetic modeling qualitatively reproduces the experimental data and reveals that the second mode is a spin-wave bullet and that the spin Hall nano-oscillator mode hops between the two modes, resulting in a substantial increase in linewidths. In contrast to the linearlike mode, the bullet is localized in the middle of the constriction and shrinks with increasing bias current. Using intrinsic frequency doubling at zero field angle, we can reach frequencies above 9 GHz in fields as low as 40 mT, which is important for the development of low-field spintronic oscillators with applications in microwave-signal generation and neuromorphic computing.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- microwave generation
- driven
- Physics
- guire tr
- 1975
- ieee transactions on magnetics
- v11
- p1018
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Mazraati, Hamid, ...
-
Etesami, Seyyed
-
Banuazizi, Seyed ...
-
Chung, Sunjae
-
Houshang, Afshin
-
Awad, Ahmad
-
visa fler...
-
Dvornik, Mykola
-
Åkerman, Johan, ...
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
- Artiklar i publikationen
-
Physical Review ...
- Av lärosätet
-
Göteborgs universitet
-
Kungliga Tekniska Högskolan