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Atomic, Solid State, Comp. Physics

- Exp. & theo. methods for atoms, molecules, condensed matter
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Feb23-13 08:41 AM
ZapperZ
1 20,809
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Hi all I was trying to understand the Born-Bethe approximation related to cross sections for atomic and molecular...
Y 01:55 AM
vrinda mukund
0 77
Hello, as we all know, in compound solids atoms are always vibrating with some degree, depending on the temperature...
Y 06:16 AM
M Quack
2 109
Can an atom be considered as an example of a dipole? It has positive charge in the nucleus and negative charge around...
Apr20-14 06:31 AM
Vanadium 50
2 156
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
0 193
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For arbitrary Fermionic self energy, \Sigma(i wn) with wn=(2n+1)pi T, its real part is always an even function of wn...
Apr16-14 11:46 AM
bsmile
0 194
Hello, I'm currently writing a chemistry program. The user can create any kind of atom he can imagine, and then...
Apr19-14 09:04 PM
SteamKing
1 194
Hi,everyone,there is an important formula of DOS as follows, D_{n}(E)=\frac{Ω}{(2\pi)^{3}}\int_{BZ}dk\delta (1) ...
Y 07:43 PM
Simon Bridge
5 220
Hi, Could anyone explain how the affect that P-N junction depth has on the performance of a semiconductor device?...
Apr20-14 12:20 PM
M Quack
1 227
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
0 228
Hi, I am looking for an introduction to heat capacity measurements at low temperature (10K). (For example for...
Apr9-14 12:10 PM
kuecken
0 229
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
0 231
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
0 241
Hello All! I was wondering if anyone can tell me if or if not the wavefunctions used to construct the electron...
Apr15-14 10:17 PM
sidiq
2 250
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
1 257
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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
3 259
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
2 262
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
1 286
I know--because of Noether's theorem--that continuous rotational symmetry implies conservation of angular momentum,...
Apr20-14 05:13 AM
M Quack
2 290
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
9 291
http://www.supraconductivite.fr/media/images/pages/image012.gif In the above picture it is clear that the...
Apr12-14 09:11 AM
paulzhen
4 293
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
4 302
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
1 303
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
1 325
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
0 335
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
0 345
Hello Guys! I have been studying electromagnetic waves (EMW) interaction with matter lately and I just derived the...
Apr9-14 01:38 PM
nasu
3 350
Hello, Are the electrons at the fermi level regarded as the "free electrons" of the metal? Also, how does one go...
Apr15-14 12:32 AM
Simon Bridge
4 354
Does Janak's Theorem predicts Ionization energies better than it predicts Electron Affinities, similar to Koopman's...
Mar30-14 12:07 PM
supw
0 369
What is "thermal rounding"
Nov21-13 06:41 AM
fizikbrat
0 381
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
1 389
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
1 394
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
0 402
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
3 409
Hi If we fabricate a heterojunction from TiO and lead phthalocyanine (PbPc is an organic semiconductor) by thermal...
Nov28-13 03:27 AM
r.sahebi
0 431
The surface photovoltage effect suggests that the potential at the surface of a semiconductor will change when it is...
Jan21-14 02:51 PM
arrektor
0 431
Referring to the following journal by R. Hao et. al., J. Cryst. Growth, 337, 81, (2011): From this sentence, a...
Jan21-14 09:50 PM
maxxlr8
0 434

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