NANOSCIENCE: RESEARCH ON NANOSCIENCE DESCRIBED BY E.M. KAZARYAN AND COLLEAGUES

Technology News Focus
May 5, 2010

"For the regime of strong quantization the interband transitions in
narrow-gap InSb cylindrical quantum dots are theoretically investigated
in the presence of homogeneous magnetic field. In the frame of two-band
Kane model for electrons (light holes) and parabolic dispersion for
heavy holes, the absorption coefficients of non-interacting quantum
dot ensemble are calculated," scientists in Yerevan, Armenia report.

"The absorption threshold frequencies are defined. It is shown that
these frequencies correspond to infrared range. The influence of
Coulomb interaction between electron and hole on the energetic spectrum
of the mentioned system is discussed in framework of perturbation
theory," wrote E.M. Kazaryan and colleagues.

The researchers concluded: "Quantitative calculations are performed
using the recent experimental data on the growth of InSb quantum dots."

Kazaryan and colleagues published their study in the Journal of
Computational and Theoretical Nanoscience (Interband Absorption
in a Narrowband InSb Cylindrical Quantum Dots in Presence of the
Magnetic Field. Journal of Computational and Theoretical Nanoscience,
2010;7(2):486-491).

For additional information, contact H.A. Sarkisyan, Russian Armenian
University, 123 Hovsep Emin St., Yerevan 0051, Armenia.

The publisher’s contact information for the Journal of Computational
and Theoretical Nanoscience is: American Scientific Publishers,
25650 North Lewis Way, Stevenson Ranch, CA 91381-1439, USA.