Spin pumping blocked by single-layer graphene

Satoshi Haku; Takaharu Tashiro; Hiroyasu Nakayama; Jun'Ichi Ieda; Shiro Entani; Seiji Sakai; Kazuya Ando

doi:10.7567/APEX.8.073009

Spin pumping blocked by single-layer graphene

Satoshi Haku
, Takaharu Tashiro
, Hiroyasu Nakayama
, Jun'Ichi Ieda
, Shiro Entani
, Seiji Sakai
, Kazuya Ando

Department of Applied Physics and Physico-Informatics

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

2 Citations (Scopus)

Abstract

We demonstrate that spin pumping in a Ni₈₁Fe₁₉/Pt bilayer is strongly suppressed by inserting single-layer graphene (SLG) at the interface. Spin pumping in the Ni81Fe19/Pt bilayer enhances the magnetization damping of the ferromagnetic layer, which is quantified from the microwave frequency dependence of the ferromagnetic resonance linewidth. We show that the enhancement of the magnetization damping due to spin pumping disappears in a Ni₈₁Fe₁₉/SLG/Pt trilayer. This result indicates that spin pumping is blocked by the atomic monolayer, illustrating the crucial role of interfacial short-range spin-exchange coupling in spin pumping in metallic systems.

Original language	English
Article number	073009
Journal	Applied Physics Express
Volume	8
Issue number	7
DOIs	https://doi.org/10.7567/APEX.8.073009
Publication status	Published - 2015 Jul 1

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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title = "Spin pumping blocked by single-layer graphene",

abstract = "We demonstrate that spin pumping in a Ni81Fe19/Pt bilayer is strongly suppressed by inserting single-layer graphene (SLG) at the interface. Spin pumping in the Ni81Fe19/Pt bilayer enhances the magnetization damping of the ferromagnetic layer, which is quantified from the microwave frequency dependence of the ferromagnetic resonance linewidth. We show that the enhancement of the magnetization damping due to spin pumping disappears in a Ni81Fe19/SLG/Pt trilayer. This result indicates that spin pumping is blocked by the atomic monolayer, illustrating the crucial role of interfacial short-range spin-exchange coupling in spin pumping in metallic systems.",

author = "Satoshi Haku and Takaharu Tashiro and Hiroyasu Nakayama and Jun'Ichi Ieda and Shiro Entani and Seiji Sakai and Kazuya Ando",

note = "Publisher Copyright: {\textcopyright} 2015 The Japan Society of Applied Physics.",

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TY - JOUR

T1 - Spin pumping blocked by single-layer graphene

AU - Haku, Satoshi

AU - Tashiro, Takaharu

AU - Nakayama, Hiroyasu

AU - Ieda, Jun'Ichi

AU - Entani, Shiro

AU - Sakai, Seiji

AU - Ando, Kazuya

PY - 2015/7/1

Y1 - 2015/7/1

N2 - We demonstrate that spin pumping in a Ni81Fe19/Pt bilayer is strongly suppressed by inserting single-layer graphene (SLG) at the interface. Spin pumping in the Ni81Fe19/Pt bilayer enhances the magnetization damping of the ferromagnetic layer, which is quantified from the microwave frequency dependence of the ferromagnetic resonance linewidth. We show that the enhancement of the magnetization damping due to spin pumping disappears in a Ni81Fe19/SLG/Pt trilayer. This result indicates that spin pumping is blocked by the atomic monolayer, illustrating the crucial role of interfacial short-range spin-exchange coupling in spin pumping in metallic systems.

AB - We demonstrate that spin pumping in a Ni81Fe19/Pt bilayer is strongly suppressed by inserting single-layer graphene (SLG) at the interface. Spin pumping in the Ni81Fe19/Pt bilayer enhances the magnetization damping of the ferromagnetic layer, which is quantified from the microwave frequency dependence of the ferromagnetic resonance linewidth. We show that the enhancement of the magnetization damping due to spin pumping disappears in a Ni81Fe19/SLG/Pt trilayer. This result indicates that spin pumping is blocked by the atomic monolayer, illustrating the crucial role of interfacial short-range spin-exchange coupling in spin pumping in metallic systems.

UR - https://www.scopus.com/pages/publications/84936805714

UR - https://www.scopus.com/pages/publications/84936805714#tab=citedBy

U2 - 10.7567/APEX.8.073009

DO - 10.7567/APEX.8.073009

M3 - Article

AN - SCOPUS:84936805714

SN - 1882-0778

VL - 8

JO - Applied Physics Express

JF - Applied Physics Express

IS - 7

M1 - 073009

ER -

Spin pumping blocked by single-layer graphene

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