Matlab code for quantum well

Updated 05 Mar This kind of structure is used extensively in, for example, the lasers for telecommunications with optical fibers. It also plots the corresponding eigenfunctions given the potential energy and well width. Ernesto Momox Beristain Retrieved April 17, Learn About Live Editor. Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance.

Other MathWorks country sites are not optimized for visits from your location. Toggle Main Navigation. File Exchange. Search MathWorks. Open Mobile Search. Trial software. You are now following this Submission You will see updates in your activity feed You may receive emails, depending on your notification preferences. GaAs Single Quantum Well version 1.

Potential well, a Matlab simulation

It calculates the energy levels vs. Follow Download. Overview Functions. Miller, Quantum Mechanics for Scientist and Engineers. PhD Student. Ernesto Momox Beristain. Cite As Ernesto Momox Beristain Comments and Ratings 1. Doan Vinh Doan Vinh view profile. Requires Optimization Toolbox. Tags Add Tags gaas physics quantum well. Discover Live Editor Create scripts with code, output, and formatted text in a single executable document. Select a Web Site Choose a web site to get translated content where available and see local events and offers.Updated 05 Mar This kind of structure is used extensively in, for example, the lasers for telecommunications with optical fibers.

It also plots the corresponding eigenfunctions given the potential energy and well width. Ernesto Momox Beristain Retrieved April 9, Learn About Live Editor. Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance.

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GaAs Single Quantum Well version 1.

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It calculates the energy levels vs. Follow Download. Overview Functions. Miller, Quantum Mechanics for Scientist and Engineers. PhD Student. Ernesto Momox Beristain.

Cite As Ernesto Momox Beristain Comments and Ratings 1. Doan Vinh Doan Vinh view profile. Requires Optimization Toolbox. Tags Add Tags gaas physics quantum well. Discover Live Editor Create scripts with code, output, and formatted text in a single executable document. Select a Web Site Choose a web site to get translated content where available and see local events and offers. Select web site.Updated 20 Mar It also calculates the different energy levels for electrons, heavy and light holes given the Al composition x.

Ernesto Momox Beristain Retrieved April 17, It has helped me to understand more clearly this issue.

matlab code for quantum well

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MATLAB codes for ALGAAS/GAAS triple quantum wells

You are now following this Submission You will see updates in your activity feed You may receive emails, depending on your notification preferences. Electrons, heavy and light holes energy levels vs. Follow Download. Overview Functions. Cite As Ernesto Momox Beristain Comments and Ratings 6. Oh youngje Oh youngje view profile.

Dan Xie Dan Xie view profile. In your code you have "tipos" what is that? Luz Luz view profile. Tags Add Tags gaalas gaas physics quantum wells. Discover Live Editor Create scripts with code, output, and formatted text in a single executable document.

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It only takes a minute to sign up. I am trying to follow an algorithm that is described in Elementary Quantum Mechanics in 1D. I want to compute eigen-energies and functions in bound states in the basic case in rectangular potential well shown on page 99 as a simple example. And I can't get the same solution as shown in page I have tried inspecting the algorithm and it seems ok to me, so I am suspecting whether I'm doing something wrong with the Units or scaling or something like that The algorithm is inspected throughout pages I have written the algorithm to be computed in general cases, and I have checked it with the Gaussian well too, it produces same failure results In summary, what I want to achieve is to get correct results for just one potential well.

The algorithm in that case can be summed to this. In the general case in which you have a potential function approximated with many step functions, the transfer matrix would be:. The author of the book decomposes the equations make them simpler for computing.

In the most easiest case of one rectangular potential well the regions are left and right of the well. The potential energy outside the well is 20eV while inside is 0V. The with of the well is 8 Angstroms or 0. I need more reputation to post more than two links, and I think this book I posted is really good for reference, so I can't post what the solution looks like but tell you that it's on page So, getting back to the problem in hand. I would like to calculate the energy eigenvalues in bound states.

The criteria for bound states is that the energies that are being calculated need to be less then the energy of the potential well on it's left and right boundary region. So, since the problem for rectangular well is greatly simplified it turns out the only thing you need to compute is this page 99 :. But I still don't get the correct values. I have checked my units again and again, and I just can't seem to understand where's the error.

But I'm still not getting the same results as in the book page It's the mass.

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The author of the book used only the free particle mass while I taken with some other things I need to calculate forgot that I was using the mass in GaAs and since I didn't know what to expect for GaAs, I thought I was getting something wrong I think I tweaked my code a bit to work on every step potential, if you wish to find bound states:. Sign up to join this community.

The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Transfer Matrix Method in a rectangular potential well Ask Question. Asked 4 years, 8 months ago.Hot Threads. Featured Threads. Log in Register. Search titles only.

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JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Problem regarding Matlab code for n no of quantum well. Thread starter Rajat Karmaka Start date Dec 21, Rajat Karmaka. Subscripted assignment dimension mismatch. Related Quantum Physics News on Phys.

Cthugha Science Advisor. Your matrix dimensions do not match. You defined: Rajat Karmaka said:. Rajat Karmaka said:. You must log in or register to reply here. Related Threads on Problem regarding Matlab code for n no of quantum well A little notation help, on quantum coding. Last Post May 18, Replies 10 Views 1K. LaTeX code for Quantum. Last Post Mar 4, Replies 1 Views 4K.

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Quantum dot, quantum wire, quantum well? Last Post Jun 6, Triangular Quantum Well. Last Post Sep 18, GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. The program calculates the confined energy levels and the spacial distribution of the electron probability wave in the conduction band. The Schrodinger equation is solved based on the semiclassical approach.

That is, the entire heterostructure is treated as a single quantum mechanical system with a well-defined Hamiltonian. The eigenstates are stationary without considering the coherent time evolution. The effective mass of the electrons is energy and spacial dependent based on the kp theory and the heterostructure of the material system.

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The lifetime of the electron on a energy level is based on the logitudinal optical LO phonon and interfacr roughness IFR scatterings. It is calculated using Fermi's golden rule and Frolich Hamiltonian. All the confined energy levels in the single target period, all the confined energy levels in the consecutive period, doping density, doping area, upper and lower laser levels, temperature.

Initial electron distribution, steady state electron distribution on each of the confined energy level, time evolution of the electron distribution, broadening, electroluminescence speactra. Selected interactive optical levels, spectra-overlap ratio, all the confined energy levels in the single target period, all the confined energy levels in the consecutive period, doping density, doping area, upper and lower laser levels, temperature. Time evolution of the photon flux, time evolution of the electron distribution, steady state electron distribution.

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matlab code for quantum well

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matlab code for quantum well

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Gaas gaalas quantum wells in matlab

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