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Atomic, Solid State, Comp. Physics

- Exp. & theo. methods for atoms, molecules, condensed matter
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Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:41 AM
ZapperZ
1 20,690
Question statement: We are given that Ca and CaF2 are both Ca face-centred cubic lattices, and that in the case of...
T 04:02 AM
Ichimaru
0 23
Hello All! I was wondering if anyone can tell me if or if not the wavefunctions used to construct the electron...
Y 10:17 PM
sidiq
2 138
Hello, Are the electrons at the fermi level regarded as the "free electrons" of the metal? Also, how does one go...
Y 12:32 AM
Simon Bridge
4 235
Hello, I see a Hamiltonian of spin-orbit coupling, it is like this H=\frac{1}{2m} \sum_{\alpha} \left( \left(...
Apr14-14 09:13 PM
Tianyou
4 215
I read this: I don't see why the electron spin affected the number of lines to go up in some atoms and not in...
Apr14-14 09:02 AM
DrClaude
1 152
I'm supposed to give a seminar tomorrow for my 300 level experimental physics paper. The experiments we do our reports...
Apr14-14 02:49 AM
cooev769
9 189
When we connect P and N materials, electrons from N drift to P, thus create negative ions in P and positive ions in N....
Apr13-14 05:18 AM
Goodver
2 177
Hi. According to this page and other sources I found the z-component of the electronic magnetic moment is greater...
Apr13-14 03:45 AM
mfb
3 168
http://www.supraconductivite.fr/media/images/pages/image012.gif In the above picture it is clear that the...
Apr12-14 09:11 AM
paulzhen
4 199
Published values for the room temperature thermal conductivity of graphene vary from ~2000 W/m*k to 5600 W/m*k, for...
Apr11-14 10:59 AM
christopher.s
0 157
I had a random idea and wanted to know whether graphene could retain it's conductive properties after being exposed to...
Apr10-14 05:57 PM
jlopezfis
3 479
Phonons are said to be the result of the quantization of crystal waves.Let the function u=u_0...
Apr10-14 06:46 AM
Zarqon
1 211
How would react ion of some gas (low energy anion or cation) in vicinity of a grounded metal surface or in vicinity of...
Apr10-14 03:00 AM
mr.smith
0 150
Hello Guys! I have been studying electromagnetic waves (EMW) interaction with matter lately and I just derived the...
Apr9-14 01:38 PM
nasu
3 262
Problem statement: The Bragg angles of a certain reflection from copper is 47.75◦ at 20◦C but is 46.60◦ at 1000◦C....
Apr9-14 01:26 PM
nasu
1 197
If p-type semiconductor and n-type semiconductor of a diode are equally doped, and if the diode is forward biased,...
Apr9-14 01:22 PM
M.Kalai vanan
0 121
Hi, I am looking for an introduction to heat capacity measurements at low temperature (10K). (For example for...
Apr9-14 12:10 PM
kuecken
0 146
Hello all, I'd truly appreciate if you could provide me with guidance on this. I'm trying to find the electric...
Apr9-14 11:51 AM
npathmat
0 152
I cannot wrap my head around this stuff. Sorry if long post. I understand that emission lines come from a higher...
Apr8-14 03:23 AM
Zarqon
1 202
Does atoms in a crystal have energy states like electronic states? it is according to Einstein relation for harmonic...
Apr7-14 11:55 PM
jlopezfis
1 243
Hi guys, I am going to get a shot to perform a short experiment of my choosing with an FTIR device. Do you have any...
Apr7-14 05:36 PM
jlopezfis
6 867
What is the significance/physical interpretation of Fractional Occupation Numbers in DFT?
Apr7-14 02:35 PM
Useful nucleus
5 382
Hi, I have problems with the following: Number of modes for a 2d crystal with one atom per primittive unit cell. ...
Apr5-14 01:56 PM
DrDu
1 319
I am reading a paper about Random Graph Theory and Percolation theory and it keeps talking about infinite clusters and...
Apr4-14 11:06 AM
joshthekid
0 251
How is it exactly i convert between a k-space sum an integral? Assume that we have some macroscopic solid. Periodic...
Apr3-14 02:50 PM
DrDu
2 405
Two questions, really: I’m finding it hard to wrap my head around the connections between k-space and real-space...
Apr3-14 04:50 AM
f95toli
7 502
I've tried searching for it but while there are a lot of hits on the fact that graphene's conductivity is high, there...
Mar30-14 07:28 PM
Simon Bridge
3 330
How exactly does superfluidity occur in helium 3? I have heard that the nuclei of the helium atoms form pairs...
Mar30-14 12:48 PM
lizzie96
0 321
Does Janak's Theorem predicts Ionization energies better than it predicts Electron Affinities, similar to Koopman's...
Mar30-14 12:07 PM
supw
0 297
On the attached file the tight binding dispersion for a 2d square lattice is described. It is then assumed that the...
Mar30-14 08:58 AM
aaaa202
0 275
Hi all, could you suggest me references that can help me in the following calculation? I would like to see how to...
Mar26-14 02:28 AM
DrDu
1 424
So I was looking through the internet on how one could improve the efficiency of a vacuum system (with a diffusion...
Mar25-14 11:19 PM
rkum99
11 1,460
I had a random idea about the effect of cosmic rays on graphene's conductivity. I found out that cosmic rays would...
Mar25-14 01:46 PM
UltrafastPED
3 419
Below is part of derivation of the boltzmann equation in an electric and magnetic field. I don't understand how to...
Mar25-14 05:41 AM
aaaa202
0 418
Hello. I started studying DFT and using it for a bit of work I needed to do in College. I found it a bit interesting,...
Mar23-14 10:18 PM
t!m
5 1,017
Hello, I just read a question about the Ising model, and this reminds me of an old interrogation I had long ago. It...
Mar23-14 10:08 PM
t!m
8 983
Supposing that some solid can exist at 2 different phases (had 2 different crystalline structure) at some temperature...
Mar23-14 04:31 PM
DrDu
6 422
Hi, could someone direct me or recommend me some materials which deal with those problems? I would like to get...
Mar23-14 08:50 AM
ZapperZ
1 362
Hi all Can someone please describe how the form factor used in Rutherford scattering is applicable to neutron...
Mar22-14 03:41 AM
M Quack
1 458
hi all... I have written codes for 2d fdtd tfsf with berenger's pml absorbing boundary. But I have serious leakage...
Mar18-14 04:13 AM
DrDu
8 625

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