It is demonstrated that the temporal evolution of a spin-wave induced inverse spin Hall effect voltage in a magnetic insulator–nonmagnetic metal structure is distinctly different from that of the directly excited (microwave pulse driven) spin-wave mode from which it originates. The differences in temporal behavior provide compelling evidence that incoherent secondary spin-wave modes, having a range of different characteristic lifetimes, make an important contribution to spin pumping at the insulator-metal interface.
REFERENCES
1.
I.
Žutic
, J.
Fabian
, and S.
Das Sarma
, Rev. Mod. Phys.
76
, 2
(2004
).2.
J. F.
Gregg
, Nature Mater.
6
, 798
(2007
).3.
Y.
Kajiwara
, K.
Harii
, S.
Takahashi
, J.
Ohe
, K.
Uchida
, M.
Mizuguchi
, H.
Umezawa
, H.
Kawai
, K.
Ando
, K.
Takanashi
, S.
Maekawa
, and E.
Saitoh
, Nature
464
, 262
(2010
).4.
A. A.
Serga
, A. V.
Chumak
, and B.
Hillebrands
, J. Phys. D: Appl. Phys.
43
, 264002
(2010
).5.
T.
Schneider
, A. A.
Serga
, B.
Leven
, B.
Hillebrands
, R. L.
Stamps
, and M. P.
Kostylev
, Appl. Phys. Lett.
92
, 022505
(2008
).6.
A.
Khitun
, M.
Bao
, J.
Lee
, K.
Wang
, D. W.
Lee
, and S.
Wang
, Materials Research
998
(2007
).7.
Y.
Tserkovnyak
, A.
Brataas
, and G. E. W.
Bauer
, Phys. Rev. B
66
, 224403
(2002
).8.
E.
Saitoh
, M.
Ueda
, H.
Miyajima
, and G.
Tatara
, Appl. Phys. Lett.
88
, 182509
(2006
).9.
N. P.
Stern
, D. W.
Steuerman
, S.
Mack
, A. C.
Gossard
, and D. D.
Awschalom
, Nature Physics
4
, 843
(2008
).10.
A. G.
Gurevich
and G. A.
Melkov
, Magnetization Oscillations and Waves
(CRC
, New York
, 1996
).11.
C. W.
Sandweg
, Y.
Kajiwara
, K.
Ando
, E.
Saitoh
, and B.
Hillebrands
, Appl. Phys. Lett.
97
, 252504
(2010
).12.
S. O.
Demokritov
, B.
Hillebrands
, and A. N.
Slavin
, Phys. Rep.
348
, 441
(2001
).13.
S.
Mizukami
, Y.
Ando
, and T.
Miyazaki
, Phys. Rev. B
66
, 104413
(2002
).14.
J. E.
Hirsch
, Phys. Rev. Lett.
83
, 1834
(1999
).15.
V. S.
L’vov
, Wave Turbulence under Parametric Excitations: Applications to Magnetics
(Springer
, Berlin
, 1994
).16.
17.
G. A.
Melkov
, V. I.
Vasyuchka
, Yu. V.
Kobljanskyj
, and A. N.
Slavin
, Phys. Rev. B
70
, 224407
(2004
).18.
C. W.
Sandweg
, Y.
Kajiwara
, A. V.
Chumak
, A. A.
Serga
, V. I.
Vasyuchka
, M. B.
Jungfleisch
, E.
Saitoh
, and B.
Hillebrands
, Phys. Rev. Lett.
106
, 216601
(2011
).19.
J. P.
Jamet
and H.
Le Gall
, Phys. Status Solidi A
31
, 547
(1975
).© 2011 American Institute of Physics.
2011
American Institute of Physics
You do not currently have access to this content.
