Spin-dependent transport properties of Mn2RuxGa thin-films are studied as function of the Ru concentration and the substrate-induced strain. The large spontaneous Hall angle of 7.7% twenty times bigger than in other 3d metals is a signature of its half-metallicity. The compensation temperature where the magnetization of the two inequivalent antiferromagnetically coupled Mn sublattices cancel can be tuned by varying x or the biaxial strain. This zero-moment half metal is free from demagnetizing forces and creates no stray field, effectively removing two obstacles to integrating magnetic elements in densely packed, nanometer-scale memory elements, and millimeter-wave generators.
References
1.
T.
Graf
, J.
Winterlik
, L.
Müchler
, G. H.
Fecher
, C.
Felser
, and S. S.
Parkin
, in Handbook of Magnetic Materials
, edited by K.
Buschow
(Elsevier
, 2013
), Vol. 21
, pp. 1
–75
.2.
J.
Kübler
, A. R.
William
, and C. B.
Sommers
, Phys. Rev. B
28
, 1745
(1983
).3.
W.
Wang
, H.
Sukegawa
, R.
Shan
, S.
Mitani
, and K.
Inomata
, Appl. Phys. Lett.
95
, 182502
(2009
).4.
Y. K.
Takahashi
, A.
Srinivasan
, B.
Varaprasad
, A.
Rajanikanth
, N.
Hase
, T. M.
Nakatani
, S.
Kasai
, T.
Furubayashi
, and K.
Hono
, Appl. Phys. Lett.
98
, 152501
(2011
).5.
S.
Tsunegi
, Y.
Sakuraba
, M.
Oogane
, K.
Takanashi
, and Y.
Ando
, Appl. Phys. Lett.
93
, 112506
(2008
).6.
R. A.
de Groot
, F. M.
Mueller
, P. G. v.
Engen
, and K. H. J.
Buschow
, Phys. Rev. Lett.
50
, 2024
(1983
).7.
S.
Wurmehl
, H. C.
Kandpal
, G. H.
Fecher
, and C.
Felser
, J. Phys.: Condens. Matter
18
, 6171
(2006
).8.
X.
Hu
, Adv. Mater.
24
, 294
(2012
).9.
I.
Galanakis
, P.
Mavropoulos
, and P. H.
Dederichs
, J. Phys. D: Appl. Phys.
39
, 765
(2006
).10.
E.
Şaşıoğlu
, Phys. Rev. B
79
, 100406
(2009
).11.
M.
Hakimi
, M.
Venkatesan
, K.
Rode
, K.
Ackland
, and J. M. D.
Coey
, J. Appl. Phys.
113
, 17B101
(2013
).12.
H.
Kurt
, K.
Rode
, P.
Stamenov
, M.
Venkatesan
, Y.-C.
Lau
, E.
Fonda
, and J. M. D.
Coey
, Phys. Rev. Lett.
112
, 027201
(2014
).13.
D.
Betto
, N.
Thiyagarajah
, Y.-C.
Lau
, C.
Piamonteze
, M.-A.
Arrio
, P.
Stamenov
, J. M. D.
Coey
, and K.
Rode
, Phys. Rev. B
91
, 094410
(2015
).14.
15.
T. W.
Kim
, S. H.
Lim
, and R. J.
Gambino
, J. Appl. Phys.
89
, 7212
(2001
).16.
Y.
Pu
, D.
Chiba
, F.
Matsukura
, H.
Ohno
, and J.
Shi
, Phys. Rev. Lett.
101
, 117208
(2008
).17.
F.
Wu
, E. P.
Sajitha
, S.
Mizukami
, D.
Watanabe
, T.
Miyazaki
, H.
Naganuma
, M.
Oogane
, and Y.
Ando
, Appl. Phys. Lett.
96
, 042505
(2010
).18.
H.
Kurt
, K.
Rode
, M.
Venkatesan
, P.
Stamenov
, and J. M. D.
Coey
, Phys. Rev. B
83
, 020405
(2011
).19.
I.
Galanakis
, K.
Özdoğan
, E.
Şaşıoğlu
, and S.
Blügel
, J. Appl. Phys.
116
, 033903
(2014
).20.
J. M.
Chamberlain
, Philos. Trans. R. Soc. London, Ser. A
362
, 199
(2004
).© 2015 AIP Publishing LLC.
2015
AIP Publishing LLC
You do not currently have access to this content.
