Excitation of exchange spin waves in a magnetic insulator thin film at cryogenic temperatures

Chen，Jilei1,2; Wang，Hanchen3,4; Wang，Jinlong3; Sheng，Lutong3; Liu，Tao5; Liu，Song1,2; Yu，Dapeng1,2; Yu，Haiming1,3

2024-06-28

10.1088/1361-6463/ad36d1

Journal of Physics D: Applied Physics   影响因子和分区

0022-3727

1361-6463

Spin waves and their quanta, magnons, are promising candidates for next-generation electronic devices, due to their low-power consumption and compatibility with radio-frequency-based electronic devices. For achieving magnon-based hybrid quantum systems for quantum memory and computation, the investigation of spin-wave propagation at cryogenic temperatures is highly required. In this article, we report the excitation and detection of exchange spin waves with wavelengths of tens of nanometers in an yttrium iron garnet (YIG) thin film at cryogenic temperatures. We find that the exchange spin waves are unidirectional in all temperature ranges, owing to the chiral dynamical dipolar coupling between the spin-wave mode in the YIG and the ferromagnetic resonance mode in the cobalt nanowire. Notably, a high exchange spin-wave group velocity of 2 km s at 10 K is observed. Our results are promising for the development of high-speed and energy-efficient quantum magnonic devices operating at cryogenic temperatures.

cryogenic temperatures exchange spin waves magnonics unidirectionality

SCI ; EI

英语

通讯

20241515854148

Cryogenics ; Energy efficiency ; Quantum computers ; Quantum efficiency ; Quantum optics ; Spin waves ; Thermoelectric equipment ; Wave propagation ; Yttrium iron garnet

Energy Conservation:525.2 ; Thermoelectric Energy:615.4 ; Cryogenics:644.4 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Computer Systems and Equipment:722 ; Light/Optics:741.1 ; Inorganic Compounds:804.2 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

2-s2.0-85189354602

Scopus

1.International Quantum Academy,Shenzhen,518048,China
2.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Fert Beijing Institute,MIIT Key Laboratory of Spintronics,School of Integrated Circuit Science and Engineering,Beihang University,Beijing,100191,China
4.Department of Materials,ETH Zurich,Zurich,8093,Switzerland
5.National Engineering Research Center of Electromagnetic Radiation Control Materials,University of Electronic Science and Technology of China,Chengdu,610054,China

Chen，Jilei,Wang，Hanchen,Wang，Jinlong,et al. Excitation of exchange spin waves in a magnetic insulator thin film at cryogenic temperatures[J]. Journal of Physics D: Applied Physics,2024,57(25).

Chen，Jilei.,Wang，Hanchen.,Wang，Jinlong.,Sheng，Lutong.,Liu，Tao.,...&Yu，Haiming.(2024).Excitation of exchange spin waves in a magnetic insulator thin film at cryogenic temperatures.Journal of Physics D: Applied Physics,57(25).

Chen，Jilei,et al."Excitation of exchange spin waves in a magnetic insulator thin film at cryogenic temperatures".Journal of Physics D: Applied Physics 57.25(2024).