STRUCTURES QUANTUM WIRES AND QUANTUM DOTS

The binding energy of exciton in quantum dots with a parabolic confinement potential was calculated by variational methods beyond the Kohn-Luttinger effective mass theory, when the central-cell correction was taken into account.We have assumed that a short range potential with two parameters for str[r]

The optical resonance of a three-level system of the strongly correlated electrons in the twolevel semiconductor quantum dot interacting with the linearly polarized monochromatic electromagnetic radiation is studied. With the application of the Green function method the expressions of the state vect[r]

We study the electron spin dynamics in 2D - quantum dots due to the hyperfine interaction with surrounding nuclear spins. The study shows that electron spin dynamics depends strongly on the initial state and polarization of the nuclear spin system. Obtained results has shown that electron spin dynam[r]

1. Lý do chọn đề tài
Sự tiến bộ trong công nghệ bán dẫn hiện đại trong những năm gần đây cho phép chúng ta có khả năng chế tạo và nghiên cứu các tính chất của các cấu trúc nano bán dẫn như các giếng lượng tử (Quantum Wells), các dây lượng tử (Quantum Wires), các chấm lượng tử (Quantum Dots) và các[r]

In this book chapter, we study the nonlinear absorption of a strong electromagnetic wave in low dimensional systems (quantum wells, doped superlattices, cylindrical quantum wires and rectangular quantum wires) by using the quantum kinetic equation method. Starting from the kinetic equation f[r]

... Enhancements for Backside FA Immersion lens technology has proven to be an effective solution There are two types of immersion lens technology to date namely, Liquid Immersion Lens (LIL) [45] and Solid Immersion. .. concentrations and (b) p-Si doped at 1019 cm-3 for different Si thickness Quantu[r]

For Section A Task 2Candidates will investigate how the pd across a power supply varies when the resistance of theexternal circuit is changed.Apparatus required for each candidatefor the circuit:• digital voltmeter, or a 3½ digit multimeter, capable of reading to 0.01 V or better.• two connecting le[r]

Superconducting quantum interference device is used to measure extremely weak signals with a device called Josephson junction. Josephson junction made up of two superconductors lightly separated that pairs of electrons can tunnel through the junction in order to generate the current called Josephso[r]