Homework Statement
An infinite quantum well width is 5 nm. An electron is confined in the well with 50% in the lowest eigenstate E1 and 50% in the second lowest state E2.
1. What is the energy difference between the two lowest states, E2-E1
2. What is the possible wavefunction of the...
Hiya guys, i have a quantum well in strange notation I have never seen before. I think i can do the question, i just need to know the shape of the well.
If someone would be so kind to draw me a shape (I think its a step but not sure?).
It is:
dphi dphi...
Thickness of Quantum Well ??
As I know there are two quantum wells exist.
1. Single Quantum Well
2. Multiple Quantum Well
My ques is that : How to find the thickness of a quantum well ? is there any equation to find quantum well thickness ? for single or multiple ?
Usually I have look...
Ok, so this example question is in my lecture notes:
Homework Statement
"For a 1-D quantum well, 5nm width, 2eV barrier height, calculate the number of energy levels in the well."
Homework Equations
So the equation given is a familiar one:
E_n=\frac{n^2 \pi^2 \hbar^2}{2 m L^2}...
1. What do we mean by the carrier number at transparency. I mean, what is carrier transparency of a laser?
2. in an IEEE paper ("Circuit Modeling of Quantum-Well Lasers for Optoelectronic Integrated Circuits (ICs) Including Physical Effect of Deep-Level Traps" IEEE J. Quantum electronics...
My understanding of a quantum well transistor is that it is created by sandwiching materials with higher bandgaps with smaller ones, so that it creates a potential well. So for instance, electrons will be forced to be confined within the well, as they would travel along the Quantum Well channel...
Homework Statement
V(x) = \inf if x \leq 0
= -V if 0 < x < a
= 0 if x > a
NOTE: E>V
Find the wave functions in each region and the stated phase shift.
Homework Equations
Schrodinger Eq.
Instructions note that wave functions are:
\Psi_I = A\sin{kx}
\Psi_{II} =...
Homework Statement
(a) Determine the reflectivity spectrum R(E) of a free particle of mass m reflected from an infinite jump V(x), where
V(x)=0 if x\leq0, V(x)=-\infty if x>0
The other similar problem is:
(b) Determine the energy levels of a particle of mass m confined to an infinite...
Does anyone knows how to solve the following eigenvalue equation using matlab? so as to obtain the energy levels in a quantum well structure.. or does anyone has the codes or knows where to find the codes to do so?
Eigenvalue equation:
tan(sq_root(2mE/hbar^2)*(d/2)) = sq_root((V-E)/E) for...
Does anyone knows how to solve the following eigenvalue equation using matlab? so as to obtain the energy levels in a quantum well structure.. or does anyone has the codes or knows where to find the codes to do so?
Eigenvalue equation:
tan(sq_root(2mE/hbar^2)*(d/2)) = sq_root((V-E)/E)...
I just took up my first course of quantum mechanics and i am having some serious problems solving quantum well problems.the thing is that after i take out the energy states of the well
and try to find K1 and K2 from it, the values i get are very very large.i think i am making a msitake with...
I just took up my first course of quantum mechanics and i am having some serious problems solving quantum well problems.the thing is that after i take out the energy states of the well
and try to find K1 and K2 from it, the values i get are very very large.i think i am making a msitake with...
suppose we have a single eigen-state finite potential well like following:
V(x)= V, x<-a and x>a;
0, -a<=x<=a;
say only one eigen-state within this well S1(x)
when all of sudden this potetial well broden by size of 2
V(x)= V, x<-2a and...