Plasmonic diabolo cavity enhanced spin pumping

Jie Qian; Peng Gou; Y. S. Gui; C. M. Hu; Zhenghua An

doi:10.1063/1.4993295

Plasmonic diabolo cavity enhanced spin pumping

Jie Qian, Peng Gou, Y. S. Gui, C. M. Hu, Zhenghua An

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Low spin-current generation efficiency has impeded further progress in practical spin devices, especially in the form of wireless excitation. To tackle this problem, a unique Plasmonic Diabolo Cavity (PDC) is proposed to enhance the spin pumping (SP) signal. The SP microwave photovoltage is enhanced ∼22-fold by PDC at ferromagnetic resonance (FMR). This improvement owes to the localization of the microwave magnetic field, which drives the spin precession process to more effectively generate photovoltage at the FMR condition. The in-plane anisotropy of spin pumping is found to be suppressed by PDC. Our work suggests that metamaterial resonant structures exhibit rich interactions with spin dynamics and could potentially be applied in future high-frequency spintronics.

Original language	English
Article number	122402
Journal	Applied Physics Letters
Volume	111
Issue number	12
DOIs	https://doi.org/10.1063/1.4993295
State	Published - 18 Sep 2017
Externally published	Yes

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title = "Plasmonic diabolo cavity enhanced spin pumping",

abstract = "Low spin-current generation efficiency has impeded further progress in practical spin devices, especially in the form of wireless excitation. To tackle this problem, a unique Plasmonic Diabolo Cavity (PDC) is proposed to enhance the spin pumping (SP) signal. The SP microwave photovoltage is enhanced ∼22-fold by PDC at ferromagnetic resonance (FMR). This improvement owes to the localization of the microwave magnetic field, which drives the spin precession process to more effectively generate photovoltage at the FMR condition. The in-plane anisotropy of spin pumping is found to be suppressed by PDC. Our work suggests that metamaterial resonant structures exhibit rich interactions with spin dynamics and could potentially be applied in future high-frequency spintronics.",

author = "Jie Qian and Peng Gou and Gui, \{Y. S.\} and Hu, \{C. M.\} and Zhenghua An",

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doi = "10.1063/1.4993295",

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volume = "111",

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T1 - Plasmonic diabolo cavity enhanced spin pumping

AU - Qian, Jie

AU - Gou, Peng

AU - Gui, Y. S.

AU - Hu, C. M.

AU - An, Zhenghua

PY - 2017/9/18

Y1 - 2017/9/18

N2 - Low spin-current generation efficiency has impeded further progress in practical spin devices, especially in the form of wireless excitation. To tackle this problem, a unique Plasmonic Diabolo Cavity (PDC) is proposed to enhance the spin pumping (SP) signal. The SP microwave photovoltage is enhanced ∼22-fold by PDC at ferromagnetic resonance (FMR). This improvement owes to the localization of the microwave magnetic field, which drives the spin precession process to more effectively generate photovoltage at the FMR condition. The in-plane anisotropy of spin pumping is found to be suppressed by PDC. Our work suggests that metamaterial resonant structures exhibit rich interactions with spin dynamics and could potentially be applied in future high-frequency spintronics.

AB - Low spin-current generation efficiency has impeded further progress in practical spin devices, especially in the form of wireless excitation. To tackle this problem, a unique Plasmonic Diabolo Cavity (PDC) is proposed to enhance the spin pumping (SP) signal. The SP microwave photovoltage is enhanced ∼22-fold by PDC at ferromagnetic resonance (FMR). This improvement owes to the localization of the microwave magnetic field, which drives the spin precession process to more effectively generate photovoltage at the FMR condition. The in-plane anisotropy of spin pumping is found to be suppressed by PDC. Our work suggests that metamaterial resonant structures exhibit rich interactions with spin dynamics and could potentially be applied in future high-frequency spintronics.

UR - https://www.scopus.com/pages/publications/85029643768

U2 - 10.1063/1.4993295

DO - 10.1063/1.4993295

M3 - 文章

AN - SCOPUS:85029643768

SN - 0003-6951

VL - 111

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

M1 - 122402

ER -

Plasmonic diabolo cavity enhanced spin pumping

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