Quantum well

This research is built upon the determination of the Eigenpairs of one and two dimensional positive differential operators with periodic boundary conditions. The Schrödinger equation was solved for positive operators in both one and two dimensions. Fourier series were used to express the derivatives as the summation of Fourier terms. This led to a novel approach for the calculation of the eigenmodels of a perturbed potential well. The perturbation can be done via an electric field applied to the potential well.

88p runthenight07 01-03-2023 6 3   Download

We will show that Schrodinger equations for low-dimensional systems can be solved by the method of quantum Diffusion Monte Carlo (DMC). The wave function and energy in a ground state are found for the two-dimensional harmonic oscillator, quantum wells, quantum wires and quantum dots. This is great approach for problems of low-dimensional systems. In this paper, the sign of the wave function is not treated.

7p tamynhan5 10-12-2020 16 2   Download

Semiconductors nanoparticles have quantum size effects and non-linear optical characteristics as well as high quantum efficiency, making them next-generation materials that can be applied in various optoelectronic devices. Semiconductor nanoparticles have attracted much attention because of their novel electric and optical properties originating from surface and quantum confinement effects.

5p tamynhan5 10-12-2020 14 2   Download

This problem was also studied in the presence of both low frequency and high frequency EMW [5]. Moreover, in these works, the dependence of magnetoresistance as well as magnetoconductivity on the relative angle of applied fields has been considered carefully. The behaviors of this effect are much more interesting in low-dimensional systems, especially a two-dimensional electron gas (2DEG) system.

13p tamynhan8 04-11-2020 12 1   Download

The infinite system of differential equations for the nonequilibrium Green functions of electrons in a single-level quantum dot connected with two conducting leads is truncated by applying the mean-field approximation to the mean values of the products of four operators. As the result the system of Dyson equations for the two-point real-time nonequilibrium Green functions in the Keldysh formalism as well as that of the two-point imaginary-time Green functions are derived.

13p 12120609 01-06-2020 17 1   Download

Magneto-optical absorption coefficient (MOAC) in infinite square quantum well (SQW) is investigated by time-dependent perturbation method. The dependence of MOAC on the photon energy is calculated and graphically plotted. From the graphs showing this dependence, we obtained the spectral line width (the full-width at half maximum - FWHM) of the cyclotron-phonon resonance peaks using Profile method.

10p thuongdanguyetan19 05-02-2020 19 3   Download

In this paper, the author investigate the linear optically detected electrophonon resonance (ODEPR) effect and linewidths in the hyperbolic quantum well with Poschl-eller potential type.

9p trieuroger 11-09-2018 15 1   Download

In this paper, the author consider an nonsquare QW structure whose potential profile is described by a modified hyperbolic shape quantum well with Posch - Teller type. The author consider the MPR effect, clarify the nature of the optically detected MPR (ODMPR) effect.

8p trieuroger 11-09-2018 37 1   Download

The theoretical results for the EC are numerically evaluated, plotted and discussed for a specific RQWIP GaAs/GaAsAL. We also compared received EC with those for normal bulk semiconductors and quamtum wells to show the difference. The Ettingshausen effect in a RQWIP in the presence of an EMW is newly developed.

7p truongtien_09 08-04-2018 28 1   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Interwell coupling effect in Si/SiGe quantum wells grown by ultra high vacuum chemical vapor deposition

6p dauphong18 09-03-2012 30 2   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Binding Energy of Hydrogen-Like Impurities in Quantum Well Wires of InSb/GaAs in a Magnetic Field

4p sting10 07-03-2012 50 6   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Photo-Induced Spin Dynamics in Semiconductor Quantum Wells

4p sting09 21-02-2012 36 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Room temperature spin diffusion in (110) GaAs/ AlGaAs quantum wells

7p sting05 09-02-2012 31 3   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: A delta-doped quantum well system with additional modulation doping

5p sting05 09-02-2012 40 6   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Patterned growth of InGaN/GaN quantum wells on freestanding GaN grating by molecular beam epitaxy

7p sting05 09-02-2012 43 4   Download

This thesis presents time-resolved measurements of the spin evolution of transient carrier populations in III-V quantum wells. Non-equilibrium distributions of spin polarisation were photoexcited and probed with picosecond laser pulses in three samples; a high mobility modulation n-doped sample containing a single GaAs/AlGaAs quantum well, an In0.11Ga0.89As/GaAs sample containing three quantum wells and, a multi-period GaAs/AlGaAs narrow quantum well sample.

157p tieulaubau 21-06-2011 84 7   Download

Cấu trúc QW & MQW B(L’) // A( L ) // B( L’ ) QW ….. B/A/B/A/B/A/B/A… MQW Kiến thức về gián đoạn vùng và sự kiểm soát nó đóng vai trò quyết định trong việc chế tạo Q = (Ec) /(Eg) (Dingle)

21p rongbattu292 12-05-2011 191 57   Download