Recent content by stagger_lee

Thank you Nickjer, you've been a great help!

Are the following formulas the correct solution to this question? Thanks in advance for any help! Homework Statement Write down equations for the electron and hole concentrations n and p in a semiconductor, in terms of N{c} or N{p}, the Fermi level position E{f} and the temperature...

Sorry, i'll make sure I use latex in future. That's cleared things up for me. Thank you.

Homework Statement Having some trouble with the following equation, I'm not sure what each term represents. The problem I have is does c,v have something to do with conduction and valence? But what is N and m? And what does it mean when terms are separated by a comma? Homework...

omega = h(bar).k^2 / 2m But what is k? I'm really struggling with this!

Yeah, but how can we determine this to be a parabola?

Sorry but I don't get what you mean. How do we know it is a parabola?

Make sense of how to sketch the dispersion relation. What exactly is the the dispersion relation?

I stand corrected. I have just found 2 slides on dispersion relations. Sincerest apologies, must have over-looked them (been studying since I got in from work 6hrs ago)! Slide 1; Dispersion Relations Waves have a wavelength λ and a frequency ν. For simple waves the relation between λ...

I have a formula in my notes; E = h(bar).(ohmega) but I don't have anything in terms of k. I googled 'k' and found the following formula; k = p / h(bar) Am i on the right track here?

Thank you for your response. I think the class is considered to be a Quantum Physics class. I am an Electrical Engineering student but I have no Physics knowledge so please bear with me. Is k the variable assigned to the wavenumber? How would we sketch the dispersion relation? Are we...

Really struggling with this question guys, any help/advice will be greatly appreciated. Thanks in advance! Homework Statement Sketch dispersion relations for, (i) a proton (ii) a free electron (iii) an electron, in a crystalline solid. Comment on the similarities between (ii) and...

Hi all, any help greatly appreciated. Please bear in mind that i have no experience in any Physics and genuinly have no idea how to these questions. Homework Statement An eigenfunction of the operator d^2/dx^2 is ψ = e^2x. Find the corresponding eigenvalue. Homework Equations...