Magnon Spintronics

Karenowska, Alexy; Chumak, A. V.; Serga, Alexander A.; Hillebrands, Burkard

doi:10.1007/978-94-007-7604-3_53-1

Cited by 6 publications

(6 citation statements)

References 207 publications

(246 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In magnetic insulators (MI), pure spin currents are described using excitation states of the ferromagnetic background named magnons (or spin waves). Excitation, propagation and detection of magnons are at the confluent of the emerging concepts of magnonics 1,2 , caloritronics 3 , and spin-orbitronics 4 . Magnons, and their classical counterpart, the spin waves (SWs), can carry information over distances as large as millimeters in high-quality thick YIG films, with frequencies extending from the GHz to the THz regime 5–7 .…”

Section: Introductionmentioning

confidence: 99%

“…Magnons, and their classical counterpart, the spin waves (SWs), can carry information over distances as large as millimeters in high-quality thick YIG films, with frequencies extending from the GHz to the THz regime 5–7 . The main figure of merit for magnonic materials is the Gilbert damping α 1,5,8 which has to be as small as possible. This makes the number of relevant materials for SW propagation quite limited and none of them has yet been found to possess a large enough perpendicular magnetic anisotropy (PMA) to induce spontaneous out-of-plane magnetization.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ultra-low damping insulating magnetic thin films get perpendicular

Soumah¹,

Beaulieu²,

Qassym³

et al. 2018

Nat Commun

172

108

View full text Add to dashboard Cite

A magnetic material combining low losses and large perpendicular magnetic anisotropy (PMA) is still a missing brick in the magnonic and spintronic fields. We report here on the growth of ultrathin Bismuth doped Y3Fe5O12 (BiYIG) films on Gd3Ga5O12 (GGG) and substituted GGG (sGGG) (111) oriented substrates. A fine tuning of the PMA is obtained using both epitaxial strain and growth-induced anisotropies. Both spontaneously in-plane and out-of-plane magnetized thin films can be elaborated. Ferromagnetic Resonance (FMR) measurements demonstrate the high-dynamic quality of these BiYIG ultrathin films; PMA films with Gilbert damping values as low as 3 × 10−4 and FMR linewidth of 0.3 mT at 8 GHz are achieved even for films that do not exceed 30 nm in thickness. Moreover, we measure inverse spin hall effect (ISHE) on Pt/BiYIG stacks showing that the magnetic insulator’s surface is transparent to spin current, making it appealing for spintronic applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultra-low damping insulating magnetic thin films get perpendicular

Soumah¹,

Beaulieu²,

Qassym³

et al. 2018

Nat Commun

172

108

View full text Add to dashboard Cite

show abstract

“…High-visibility MOKE microscopy based on the remarkably enhanced Kerr amplitude enables real-time measurement and statistical analysis of nanoscale magnetic domain reversal beyond the optical diffraction limit. In the future, we expect to use the EAR MOKE microscopy approach for investigating state-of-the-art topics in the field of magnetism and spintronics, such as skyrmions 19 , 44 , magnons 45 , and magnetic solitons 46 , 47 . We also believe that the EAR technique will significantly facilitate utilisation of optically functional nanoscale-thin films, from semiconductor quantum wells 48 to two-dimensional materials (CrI 3 , CrBr 3 , and FePS 3 ) 49 – 51 , for novel photonic and electro-/magneto-optic devices and systems 52 – 54 .…”

Section: Discussionmentioning

confidence: 99%

Extreme anti-reflection enhanced magneto-optic Kerr effect microscopy

Kim

et al. 2020

Nat Commun

View full text Add to dashboard Cite

Magnetic and spintronic media have offered fundamental scientific subjects and technological applications. Magneto-optic Kerr effect (MOKE) microscopy provides the most accessible platform to study the dynamics of spins, magnetic quasi-particles, and domain walls. However, in the research of nanoscale spin textures and state-of-the-art spintronic devices, optical techniques are generally restricted by the extremely weak magneto-optical activity and diffraction limit. Highly sophisticated, expensive electron microscopy and scanning probe methods thus have come to the forefront. Here, we show that extreme anti-reflection (EAR) dramatically improves the performance and functionality of MOKE microscopy. For 1-nm-thin Co film, we demonstrate a Kerr amplitude as large as 20° and magnetic domain imaging visibility of 0.47. Especially, EAR-enhanced MOKE microscopy enables real-time detection and statistical analysis of sub-wavelength magnetic domain reversals. Furthermore, we exploit enhanced magneto-optic birefringence and demonstrate analyser-free MOKE microscopy. The EAR technique is promising for optical investigations and applications of nanomagnetic systems.

show abstract

“…Cavity optomagnonics in which precision measurements of interactions between photons and magnons are studied [1] has potential applications in quantum information processing [2] and spintronics [3]. Essentially, it allows a description where the force on magnetic moments appears as an optical pressure of photons.…”

Section: Introductionmentioning

confidence: 99%

Collective dynamics of domain walls: an antiferromagnetic spin texture in an optical cavity

Iyaro,

Proskurin,

Stamps

2021

Preprint

View full text Add to dashboard Cite

Spin canting and complex spin textures in antiferromagnetic materials can often be described in terms of Dzyaloshinskii-Moriya interactions (DMI). Values for DMI parameters are not easily measurable directly, and often inferred from other quantities. In this work, we examine how domain wall dynamics in an antiferromagnetic optomagnonic system can display unique features directly related to the existence of DMI. Our results indicate that the presence of DMI enables spin interactions with cavity photons in a geometry which otherwise allows no magneto-optical coupling, and on the other hand modulates frequencies in a geometry where coupling is already realized in the absence of DMI. This result may be used to measure the DMI constant in optomagnonic experiments by comparing resonances obtained with different polarisations of the exciting field.

show abstract

Magnon Spintronics

Cited by 6 publications

References 207 publications

Ultra-low damping insulating magnetic thin films get perpendicular

Ultra-low damping insulating magnetic thin films get perpendicular

Extreme anti-reflection enhanced magneto-optic Kerr effect microscopy

Collective dynamics of domain walls: an antiferromagnetic spin texture in an optical cavity

Contact Info

Product

Resources

About