The work provides a thorough illustration of use of WKB method to barrier transmission problem. On reading the book, the reader will be adept in using the method. Single and symmetric double barriers of general shape are treated first. Then single and symmetric double barriers of many different shapes we encounter in studying Nanostructure Physics are covered. Complete analytical calculation and results of extensive numerical investigation are reported along with comparison with standard results where available showing excellent agreement.

The book deals with a semiconductor nanostructure called symmetric rectangular double barrier. Complete and thorough analytical calculation of transmission coefficient of GaAs-AlGaAs symmetric rectangular double barrier (for E

We have studied Physics of a Nanostructure called Quantum Well (QW). We have numerically calculated confined energy levels of electrons, light holes and heavy holes in isolated GaAs-AlGaAs QWs of various widths and depths. We have presented both graphically as well as in the form of data tables variation of the energy levels as width and depth of QW are varied. We find that the values and variations of energy are exactly the same as the values and variations of energy of resonant transmission peaks of symmetric rectangular double barrier. Surprisingly, this is exact numerical agreement. The...

The book contains thorough and complete analytical calculation of transverse wavevector dependent transmission coefficient of the semiconductor nanostructure called single rectangular tunnel barrier. Thorough numerical investigations are presented to bring out dependence of transmission coefficient on angle of incidence, transverse wavevector, total energy and longitudinal part of total energy of incident electron. Complete explanations are presented of results of numerical investigations. Physics of the problem has been solved completely in this book. Interested reader will be able to enjoy...

The work was done by Polash Ranjan Dey as M.S. thesis in the Department of Physics, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh. The work was supervised by Dr. Sujaul Chowdhury, schowdhuryphy@yahoo.com. The work gives a thorough illustration of use of wave mechanics to semiconductor nanostructure in presence of magnetic field. The work covers complete analytical calculation and thorough numerical investigation with complete explanation of the results obtained.

We have demonstrated Physics for which we need to modify boundary condition to be used in matching solutions of Schroedinger equation at finite potential discontinuities i.e. at interfaces between barrier and quantum well materials, because of difference of effective mass of electron in their conduction bands. Using the modified boundary condition, we have presented thorough and complete analytical calculation of transmission coefficient of nanostructures called single rectangular tunnel barrier and symmetric rectangular double barrier. We have presented numerical investigations...