In this letter, we have clarified that there is no spin polarization and spin filtering in a magnetic barrier structure as well as in a magnetic–electric barrier structure using our explicit expressions for electron transmission probability. Our results are found to be contradictory to those of A. Majumdar [Phys. Rev. B 54, 11911 (1996)] and G. Papp and F. M. Peeters [Appl. Phys. Lett. 78, 2184 (2001)]. We have shown the significant spin polarization and spin filtering observed by these authors were caused by a mistake in their transmission probability.
REFERENCES
1.
A.
Matulis
, F. M.
Peeters
, and P.
Vasilopoulos
, Phys. Rev. Lett.
72
, 1518
(1994
).2.
A.
Matulis
, F. M.
Peeters
, and P.
Vasilopoulos
, Surf. Sci.
305
, 434
(1994
).3.
T.
Vancura
, T.
Ihn
, S.
Broderick
, K.
Ensslin
, W.
Wegscheider
, and M.
Bichler
, Phys. Rev. B
62
, 5074
(2000
).4.
V. N.
Dobrovolsky
, D. I.
Sheka
, and B. V.
Cheryachuk
, Surf. Sci.
397
, 333
(1998
).5.
Y.
Guo
, B.
Gu
, Z.
Zong
, J.
Yu
, and Y.
Kawazone
, Phys. Rev. B
62
, 2635
(2000
).6.
7.
8.
This content is only available via PDF.
© 2001 American Institute of Physics.
2001
American Institute of Physics
You do not currently have access to this content.
