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
N1 - Publisher Copyright:
© 2015 The Japan Society of Applied Physics.
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 -