We have developed a growth process that leads to the direct formation of self-assembled InAs quantum dots on InP(001) by solid-source molecular beam epitaxy avoiding the previous formation of quantum wires usually obtained by this technique. The process consists of a periodically alternated deposition of In and As correlated with surface reconstruction changes. Based on the results obtained by in situ characterization techniques, we propose that the quantum dots formation is possible due to the nucleation of In droplets over the surface during the In deposition step and their subsequent crystallization under the As step.
REFERENCES
1.
A.
Badolato
, K.
Hennessy
, M.
Atatüre
, J.
Dreiser
, E.
Hu
, P. M.
Petroff
, and A.
Imamouglu
, Science
308
, 1158
(2005
).2.
R. M.
Stevenson
, R. J.
Young
, P.
Atkinson
, K.
Cooper
, D. A.
Ritchie
, and A. J.
Shields
, Nature (London)
439
, 179
(2006
).3.
F.
Suárez
, D.
Fuster
, L.
González
, Y.
González
, J. M.
García
, and M. L.
Dotor
, Appl. Phys. Lett.
89
, 091123
(2006
).4.
D.
Leonard
, K.
Pond
, and P. M.
Petroff
, Phys. Rev. B
50
, 11687
(1994
).5.
T. J.
Krzyzewski
and T. S.
Jones
, Phys. Rev. B
78
, 155307
(2008
).6.
E.
Dupuy
, P.
Regreny
, Y.
Robach
, M.
Gendry
, N.
Chauvin
, E.
Tranvouez
, G.
Bremond
, C.
Bru-Chevallier
, and G.
Patriarche
, Appl. Phys. Lett.
89
, 123112
(2006
).7.
H.
Yang
, P.
Ballet
, and G. J.
Salamo
, J. Appl. Phys.
89
, 7871
(2001
).8.
J. M.
García
, L.
González
, M. U.
González
, J. P.
Silveira
, Y.
González
, and F.
Briones
, J. Cryst. Growth
227
, 975
(2001
).9.
M. U.
González
, L.
González
, J. M.
García
, Y.
González
, J. P.
Silveira
, and F.
Briones
, Microelectron. J.
35
, 13
(2004
).10.
J. M.
García
, J. P.
Silveira
, and F.
Briones
, Appl. Phys. Lett.
77
, 409
(2000
).11.
M. U.
González
, J. M.
García
, L.
González
, J. P.
Silveira
, Y.
González
, J. D.
Gómez
, and F.
Briones
, Appl. Surf. Sci.
188
, 188
(2002
).12.
D.
Fuster
, B.
Alén
, L.
González
, Y.
González
, J.
Martínez-Pastor
, M. U.
González
, and J. M.
García
, Nanotechnology
18
, 035604
(2007
).13.
D.
Fuster
, M. U.
González
, L.
González
, Y.
González
, T.
Ben
, A.
Ponce
, and S. I.
Molina
, Appl. Phys. Lett.
84
, 4723
(2004
).14.
J. M.
Ulloa
, P. M.
Koenraad
, D.
Fuster
, L.
González
, Y.
González
, and M. U.
González
, Nanotechnology
19
, 445601
(2008
).15.
D.
Fuster
, M. U.
González
, Y.
González
, and L.
González
, Surf. Sci.
600
, 23
(2006
).16.
J. S.
Kim
and N.
Koguchi
, Appl. Phys. Lett.
85
, 5893
(2004
).17.
J. H.
Lee
, Zh. M.
Wang
, and G. J.
Salamo
, J. Phys.: Condens. Matter
19
, 176223
(2007
).18.
S. O.
Cho
, Zh. M.
Wang
, and G. J.
Salamo
, Appl. Phys. Lett.
86
, 113106
(2005
).19.
Z. Y.
AbuWaar
, Zh. M.
Wang
, J. H.
Lee
, and G. J.
Salamo
, Nanotechnology
17
, 4037
(2006
).20.
P.
Alonso-González
, L.
González
, D.
Fuster
, Y.
González
, A. G.
Taboada
, and J. M.
Ripalda
, Cryst. Growth Des.
9
, 1216
(2009
).21.
F.
Briones
, L.
González
, and A.
Ruiz
, Appl. Phys. A: Solids Surf.
49
, 729
(1989
).22.
B.
Alén
, D.
Fuster
, Y.
González
, L.
González
, and J.
Martínez-Pastor
, Appl. Phys. Lett.
89
, 233126
(2006
).23.
B.
Bansal
, M. R.
Gokhale
, A.
Bhattacharya
, and B. M.
Arora
, J. Appl. Phys.
101
, 094303
(2007
).24.
M.
Holm
, M. -E.
Pistol
, and C.
Pryor
, J. Appl. Phys.
92
, 932
(2002
).25.
P.
Hawrylak
, G. A.
Narvaez
, M.
Bayer
, and A.
Forchel
, Phys. Rev. Lett.
85
, 389
(2000
).© 2009 American Institute of Physics.
2009
American Institute of Physics
You do not currently have access to this content.