The effect of electron correlation on the photocurrent of self-assembled InAs/InGaAs quantum-dot infrared photodetector is studied. It is found that Coulomb interaction and level mixing in the many-body open system lead to double peaks associated with the intraband transitions involving two lowest levels of the quantum dot. Furthermore, the photocurrent displays a negative differential photoconductance due to Coulomb blockade.
REFERENCES
1.
E.
Tow
and D.
Pan
, IEEE J. Sel. Top. Quantum Electron.
6
, 408
(2000
).2.
D. M. T.
Kuo
, G. Y.
Guo
and Y. C.
Chang
, Appl. Phys. Lett.
79
, 3851
(2001
);D. M. T.
Kuo
, A.
Fang
and Y. C.
Chang
, Infrared Phys. Technol.
42
, 433
(2001
).3.
4.
J.
Urayama
, T. B.
Norris
, J.
Singh
, and P.
Bhattacharya
, Phys. Rev. Lett.
86
, 4930
(2001
).5.
6.
A. P.
Jauho
, N. S.
Wingreen
, and Y.
Meir
, Phys. Rev. B
50
, 5528
(1994
).7.
H. Haug and A. P. Jauho, Quantum Kinetics in Transport and Optics of Semiconductors (Springer, Heidelberg, 1996).
8.
9.
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© 2003 American Institute of Physics.
2003
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