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0 votes
0 answers
28 views

$\pi$ phase shift upon reflection in quantum wells

Is there a similar phenomenon to the $\pi$ phase shift experienced by light upon reflection from a medium of lower to higher refracted index for particles in different potentials? For instance, does a ...
TheorVHP's user avatar
1 vote
2 answers
44 views

Are reflection and transmission coefficients in 1D problem are independent of the direction in which we choose as incident?

I was watching a lecture series of Quantum mechanics of Professor V. Balakrishnan, There was a problem session, “For an arbitrary potential barrier (any potential function of position and it need not ...
Vivek Panchal 's user avatar
0 votes
0 answers
37 views

Reflections from both edges of a finite well

In section 11.3.1 in Richard Robinnett's Quantum Mechanics book, it says that in the case of transmission resonance ($T=1$), there's complete destructive interference between waves reflected from the ...
EM_1's user avatar
  • 860
1 vote
0 answers
82 views

Question about hard well potential in quantum mechanics

How we can treat the potential that is infinity on one side and zero for other side $$V(x)=\begin{cases}0~~~~~~~~~x>0\\ +\infty~~~~~ x<0 \end{cases}$$ I think we must apply the one boundary ...
Lion Heart's user avatar
2 votes
1 answer
449 views

Definition of transmission and reflection coefficients for a particle

Quick intro: A 1D quantum particle is subject to the potential $$ V(x) = \begin{cases} 0 \;\;\;\;\; x\leq 0\\ V_0 \;\;\; x > 0 \end{cases} $$ I am trying to understand the definition of ...
Andrea's user avatar
  • 735
0 votes
1 answer
103 views

What's the intuition for the reflection of a quantum particle at a potential step equal to the particle's energy?

While doing the problem of potential step, I saw that if the energy of the particle is equal to the potential energy of the step, then the wave function is a constant, or to say the probability ...
Naveen Reule's user avatar
2 votes
0 answers
144 views

Is it possible the opposite of tunneling?

In tunneling we have particles of energies $E<V$ going through barriers of potential $V$. Can we get particles of energies $E>V$ get reflected by these barriers of smaller potentials?
Daniel Duque's user avatar
1 vote
2 answers
458 views

Confusion about the reflection coefficient when a particle going through a potential

Suppose we have a potential$$ V(x) = \begin{cases} 0, & \text{if $ x \le 0$} \\ V_0 & \text{if $ x \gt 0$ } \end{cases}$$ The reflection coefficient for the case $E \lt V_0$ is $1$, which ...
mathshungry's user avatar