PHYSICS: RESEARCH FROM YEREVAN STATE UNIVERSITY HAS PROVIDED NEW INFORMATION ABOUT PHYSICS

Science Letter
September 9, 2008

"Electron states and the Stark shift in narrow band quantum spherical
InSb layers are considered in frameworks of Kane model with respect to
non-parabolicity of the dispersion law. An exact analytical solution of
the corresponding Klein-Gordon equation for the model of impenetrable
walls is obtained, and in addition to that a transcendent equation
for determination of electron energetic spectrum is derived as well,"
scientists in Yerevan, Armenia report (see also Physics).

"The influence of the electric field is considered in frames of the
perturbation theory, it is also shown that the value of the Stark shift
is proportional to the second power degree of the field. Dependences of
the electron energy versus the internal field values, external radius,
and electric field are presented," wrote M. Zoheir and colleagues,
Yerevan State University.

The researchers concluded: "The obtained results are compared with
results obtained for the case with standard dispersion."

Zoheir and colleagues published their study in Physica E – Low –
Dimensional Systems & Nanostructures (Electronic states and the Stark
shift in narrow band InSb quantum spherical layer. Physica E – Low –
Dimensional Systems & Nanostructures, 2008;40(9):2945-2949).

For additional information, contact H.A. Sarkisyan, Yerevan State
University, Yerevan 375025, Armenia.

The publisher’s contact information for the journal Physica E – Low –
Dimensional Systems & Nanostructures is: Elsevier Science BV, PO Box
211, 1000 AE Amsterdam, Netherlands.