Ballistic transport of a two-dimensional electron gas (2DEG) in a rectangle shaped wire, subjected to a local nonhomogeneous magnetic field that results from an in-plane magnetized ferromagnetic (FM) strip deposited above the 2DEG, is investigated theoretically. We found a positive magnetoresistance (MR), which exhibits hysteresis behavior with respect to the direction of the magnetic field sweep, in agreement with a recent experiment. This positive MR can be tuned by applying a gate voltage to the FM strip.
REFERENCES
1.
M.
Johnson
, B. R.
Bennett
, M. J.
Yang
, M. M.
Miller
, and B. V.
Shanabrook
, Appl. Phys. Lett.
71
, 974
(1997
).2.
J.
Reijniers
and F. M.
Peeters
, Appl. Phys. Lett.
73
, 357
(1998
);J.
Reijniers
and F. M.
Peeters
, J. Appl. Phys.
87
, 8088
(2000
).3.
A. K.
Geim
, S. V.
Dubonos
, J. G. S.
Lok
, I. V.
Grigorieva
, J. C.
Maan
, L. T.
Hansen
, and P. E.
Lindelof
, Appl. Phys. Lett.
71
, 2379
(1997
).4.
F. G.
Monzon
, M.
Johnson
, and M. L.
Roukes
, Appl. Phys. Lett.
71
, 3087
(1997
).5.
M.
Johnson
, B. R.
Bennett
, P. R.
Hammar
, and M. M.
Miller
, Solid-State Electron.
44
, 1099
(2000
).6.
A.
Matulis
, F. M.
Peeters
, and P.
Vasilopoulos
, Phys. Rev. Lett.
72
, 1518
(1994
).7.
H.
Carmona
, A. K.
Geim
, A.
Nogaret
, P. C.
Main
, T. J.
Foster
, M.
Henini
, S. P.
Beaumont
, and M. G.
Blamire
, Phys. Rev. Lett.
74
, 3009
(1995
).8.
P. -D.
Ye
, D.
Weiss
, R. R.
Gerhardts
, M.
Seeger
, K.
von Klitzing
, K.
Eberl
, and H.
Nickel
, Phys. Rev. Lett.
74
, 3013
(1995
).9.
V.
Kubrak
, F.
Rahman
, B. L.
Gallagher
, P. C.
Main
, M.
Henini
, C. H.
Marrows
, and M. A.
Howson
, Appl. Phys. Lett.
74
, 2507
(1999
).10.
A.
Nogaret
, S. J.
Bending
, and M.
Henini
, Phys. Rev. Lett.
84
, 2231
(2000
).11.
T.
Vančura
, T.
Ihn
, S.
Broderick
, K.
Ensslin
, W.
Wegscheider
, and M.
Bichler
, Phys. Rev. B
62
, 5074
(2000
).12.
A.
Nogaret
, D. N.
Lawton
, D. K.
Maude
, J. C.
Portal
, and M.
Henini
, Phys. Rev. B
67
, 165317
(2003
).13.
M.
Hara
, A.
Endo
, S.
Katsumoto
, and Y.
Iye
, Phys. Rev. B
69
, 153304
(2004
).14.
J. -U.
Bae
, T. -Y.
Lin
, Y.
Yoon
, S. J.
Kim
, J. P.
Bird
, A.
Imre
, W.
Porod
, and J. L.
Reno
, Appl. Phys. Lett.
91
, 022105
(2007
).15.
J. -U.
Bae
, T. -Y.
Lin
, Y.
Yoon
, S. J.
Kim
, A.
Imre
, J. L.
Reno
, W.
Porod
, and J. P.
Bird
, Appl. Phys. Lett.
92
, 253101
(2008
).16.
J. -U.
Bae
, T. -Y.
Lin
, J. L.
Reno
, and J. P.
Bird
, Appl. Phys. Lett.
93
, 143109
(2008
).17.
C. J. W.
Beenakker
and H.
van Houten
, in Solid State Physics
, edited by H.
Ehrenreich
and D.
Turnbull
(Academic
, New York
, 1991
), Vol. 44
, p. 98
.18.
R.
Landauer
,Philos. Mag.
21
, 863
(1970
).19.
C.
Kittel
, Introduction to Solid State Physics
, 7th ed. (Wiley
, New York
, 2005
), p. 449
.20.
M.
Cerchez
, S.
Hugger
, T.
Heinzel
, and N.
Schulz
, Phys. Rev. B
75
, 035341
(2007
).21.
F. M.
Peeters
and X. Q.
Li
, Appl. Phys. Lett.
72
, 572
(1998
).22.
B. J.
Baelus
and F. M.
Peeters
, Appl. Phys. Lett.
74
, 1600
(1999
);G.
Papp
and F. M.
Peeters
, J. Appl. Phys.
101
, 063715
(2007
).© 2010 American Institute of Physics.
2010
American Institute of Physics
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