Strongly extended diffusion length for the nonequilibrium magnons in 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Y</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mi mathvariant="normal">F</mml:mi><mml:msub><mml:mi mathvariant="normal">e</mml:mi><mml:mn>5</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>12</mml:mn></mml:msub></mml:mrow></mml:math>
 by photoexcitation

Wang, S. H.; Li, G.; Guo, Er‐Jia; Zhao, Yang; Wang, J. Y.; Zou, Lvkuan; Yan, Hong; Cai, Jian; Zhang, Z. T.; Wang, M.; Tian, Yingyi; Zheng, Xiaoli; Sun, J. R.; Kusaka, Jin

doi:10.1103/physrevmaterials.2.051401

Cited by 14 publications

(8 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To study the system frequency response to a direct excitation of the material like that related to the searched particle in ferromagnetic haloscopes, we photoexcite the material with 1064-nm wavelength, 11-ps duration laser pulses and measure the power stored in the HS modes for several values of applied magnetic field. At 1064 nm, the absorption coefficient of YIG is ~10 cm −1 64-66 , corresponding to the transition 6 A 1g ( 6 S) → 4 T 1g ( 4 G) between electronic levels in the octaedral crystal field configuration 67 . In addition, the laser beam is focused within the sphere and we can thus reasonably assume that the 0.1 mJ energy of the pulse is almost entirely absorbed in the material.…”

Section: Resultsmentioning

confidence: 99%

Magnon-driven dynamics of a hybrid system excited with ultrafast optical pulses

et al. 2020

View full text Add to dashboard Cite

The potential of photon-magnon hybrid systems as building blocks for quantum information science has been widely demonstrated, and it is still the focus of much research. We leverage the strengths of this unique heterogeneous physical system in the field of precision physics beyond the standard model, where the sensitivity to the so-called “invisibles” is currently being boosted by quantum technologies. Here, we demonstrate that quanta of spin waves, induced by effective magnetic fields, can be detected in a large frequency band using a hybrid system as transducer. This result can be applied to the search of cosmological signals related, for example, to cold Dark Matter, which may directly interact with magnons. Our model of the transducer is based on a second-quantisation two-oscillators hybrid system, it matches the observations, and can be easily extended to thoroughly describe future large-scale ferromagnetic haloscopes.

show abstract

Section: Resultsmentioning

confidence: 99%

Magnon-driven dynamics of a hybrid system excited with ultrafast optical pulses

et al. 2020

View full text Add to dashboard Cite

show abstract

“…To study the system frequency response to a direct excitation of the material like that related to the searched particle in ferromagnetic haloscopes, we photoexcite the material with 1064 nm-wavelength, 11 ps-duration laser pulses and measure the power stored in the HS modes for several values of applied magnetic field. At 1064 nm, the absorption coefficient of YIG is ∼ 10 cm −164-66 , corresponding to the transition 6 A 1g ( 6 S) → 4 T 1g ( 4 G) between electronic levels in the octaedral crystal field configuration 67 . In addition, the laser beam is focused within the sphere and we can thus reasonably assume that the 0.1 mJ energy of the pulse is almost entirely absorbed in the material.…”

Section: Experimental Validationmentioning

confidence: 99%

Magnon-driven dynamics of a hybrid system excited with ultrafast optical pulses

Crescini,

Braggio,

Carugno

et al. 2020

Preprint

View full text Add to dashboard Cite

The potential of photon-magnon hybrid systems as building blocks for quantum information science has been widely demonstrated, and it is still the focus of much research. We leverage the strengths of this unique heterogeneous physical system in the field of precision physics beyond the standard model, where the sensitivity to the so-called "invisibles" is currently being boosted by quantum technologies. Here, we demonstrate that quanta of spin waves, driven by tiniest, effective magnetic field, can be detected in a large frequency band using a hybrid system as transducer. This result can be applied to the search of cosmological signals related, for example, to cold Dark Matter, which may directly interact with magnons. Our model of the transducer is based on a second-quantisation two-oscillators hybrid system, it matches the observations, and can be easily extended to thoroughly describe future large-scale ferromagnetic haloscopes.

show abstract

“…Another work indicates that light-thermally induced temperature gradients (i.e., SSE) can excite magnons in YIG. Furthermore, the long-wavelength light causes the Fe 3+ ions in the octahedra FeO 6 from a high-spin state to a low-spin state, which increases the magnetization of YIG and subsequently enhances the magnon diffusion length 13 . In addition, a solution that separates the interface temperature gradient and bulk temperature gradients has been provided to analyze their contributions to spin currents 14 .…”

Section: Introductionmentioning

confidence: 99%

Origin of the light-induced spin currents in heavy metal/magnetic insulator bilayers

Wang,

Meng,

Lin

et al. 2024

Nat Commun

View full text Add to dashboard Cite

Light-induced spin currents with the faster response is essential for the more efficient information transmission and processing. Herein, we systematically explore the effect of light illumination energy and direction on the light-induced spin currents in the W/Y3Fe5O12 heterojunction. Light-induced spin currents can be clearly categorized into two types. One is excited by the low light intensity, which mainly involves the photo-generated spin current from spin photovoltaic effect. The other is caused by the high light intensity, which is the light-thermally induced spin current and mainly excited by spin Seebeck effect. Under low light-intensity illumination, light-thermally induced temperature gradient is very small so that spin Seebeck effect can be neglected. Furthermore, the mechanism on spin photovoltaic effect is fully elucidated, where the photo-generated spin current in Y3Fe5O12 mainly originates from the process of spin precession induced by photons. These findings provide some deep insights into the origin of light-induced spin current.

show abstract

Strongly extended diffusion length for the nonequilibrium magnons in Y3Fe5O12 by photoexcitation

Cited by 14 publications

References 34 publications

Magnon-driven dynamics of a hybrid system excited with ultrafast optical pulses

Magnon-driven dynamics of a hybrid system excited with ultrafast optical pulses

Magnon-driven dynamics of a hybrid system excited with ultrafast optical pulses

Origin of the light-induced spin currents in heavy metal/magnetic insulator bilayers

Contact Info

Product

Resources

About