Conversion of pure spin current to charge current in single-layer graphene (SLG) is investigated by using spin pumping. Large-area SLG grown by chemical vapor deposition is used for the conversion. Efficient spin accumulation in SLG by spin pumping enables observing an electromotive force produced by the inverse spin Hall effect (ISHE) of SLG. The spin Hall angle of SLG is estimated to be 6.1 10−7. The observed ISHE in SLG is ascribed to its non-negligible spin-orbit interaction in SLG.
References
1.
M.
Shiraishi
and T.
Ikoma
, Physica E
43
, 1295
(2011
).2.
N.
Tombros
, C.
Jozsa
, M.
Popinciuc
, H. T.
Jonkman
, and B. J.
van Wees
, Nature
448
, 571
(2007
).3.
M.
Ohishi
, M.
Shiraishi
, R.
Nouchi
, T.
Nozaki
, T.
Shinjo
, and Y.
Suzuki
, Jpn. J. Appl. Phys.
46
, L605
(2007
).4.
S.
Cho
, Y.-H.
Chen
, and M. S.
Fuhrer
, Appl. Phys. Lett.
91
, 123105
(2007
).5.
Z.
Tang
, E.
Shikoh
, H.
Ago
, K.
Kawahara
, Y.
Ando
, T.
Shinjo
, and M.
Shiraishi
, Phys. Rev. B
87
, 140401(R)
(2013
).6.
W.
Han
, K.
Pi
, K. M.
McCreary
, Y.
Li
, J. J. I.
Wong
, A. G.
Swartz
, and R. K.
Kawakami
, Phys. Rev. Lett.
105
, 167202
(2010
).7.
K.
Ando
, S.
Watanabe
, S.
Mooser
, E.
Saitoh
, and H.
Shirringhaus
, Nat. Mater.
12
, 622
(2013
).8.
S.
Konschuh
, M.
Gmitra
, and J.
Fabian
, Phys. Rev. B
82
, 245412
(2010
).9.
D.
Huertas-Hernando
, F.
Guinea
, and A.
Brataas
, Phys. Rev. B
74
, 155426
(2006
).10.
A. H. Castro
Neto
and F.
Guinea
, Phys. Rev. Lett.
103
, 026804
(2009
).11.
H.
Ago
, K.
Kawahara
, Y.
Ogawa
, S.
Tanoue
, M. A.
Bissett
, M.
Tsuji
, H.
Sakaguchi
, R. J.
Koch
, F.
Fromm
, T.
Seyller
, K.
Komatsu
, and K.
Tsukagoshi
, Appl. Phys. Express
6
, 75101
(2013
).12.
See supplementary material at http://dx.doi.org/10.1063/1.4893574 for the detailed growth condition, transfer methods, and investigation of the surface roughness of YIG.
13.
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
).14.
A.
Tsukahara
, Y.
Ando
, Y.
Kitamura
, E.
Shikoh
, M. P.
Delmo
, T.
Shinjo
, and M.
Shiraishi
, Phys. Rev. B
89
, 235317
(2014
).15.
Y.
Ogawa
, K.
Komatsu
, K.
Kawhara
, M.
Tsuji
, K.
Tsukagoshi
, and H.
Ago
, Nanoscale
6
, 7288
(2014
).16.
H.
Coy-Diaz
, R.
Addou
, and M.
Batzill
, J. Phys. Chem. C
117
, 21006
(2013
).17.
K.
Ando
, S.
Takahashi
, J.
Ieda
, Y.
Kajiwara
, H.
Nakayama
, T.
Yoshino
, K.
Harii
, Y.
Fujikawa
, M.
Matsuo
, S.
Maekawa
, and E.
Saitoh
, J. Appl. Phys.
109
, 103913
(2011
).18.
T.
Banerjee
, W. G.
van der Wiel
, and R.
Jansen
, Phys. Rev. B
81
, 214409
(2010
).19.
W.
Han
and R. K.
Kawakami
, Phys. Rev. Lett.
107
, 047207
(2011
).20.
M. H. D.
Guimarães
, P. J.
Zomer
, J.
Ingla-Aynés
, J. C.
Brant
, N.
Tombros
, and B. J.
van Wees
, Phys. Rev. Lett.
113
, 086602
(2014
).21.
F.
Volmer
, M.
Droegeler
, E.
Maynicke
, N. von den
Driesch
, M. L.
Boschen
, G.
Güntherodt
, and B.
Beschoten
, Phys. Rev. B
88
, 161405(R)
(2013
).© 2014 AIP Publishing LLC.
2014
AIP Publishing LLC
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