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Atomic, Solid State, Comp. Physics

- Exp. & theo. methods for atoms, molecules, condensed matter
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:41 AM
ZapperZ
1 24,958
In a perfect periodic crystal, do lattice vibrational modes corresponding to different wave vectors (k-vectors)...
T 01:13 AM
DrDu
3 117
Hi, I just read a paper on graphene's basic properties and it says that since current density J is given as ...
Y 05:00 PM
Greg Bernhardt
1 200
All the books that deal with the p-n junction under applied bias asume that the same equations used for the...
Y 05:00 PM
Greg Bernhardt
1 515
I have been chewing up some time ago the Schottky-Mott theory of Schottky Barrier height (which ignores the surface...
Y 05:00 PM
Greg Bernhardt
1 350
Hi Everyone, I was curious as to what the most current model in solid state physics is. I've studied the Einstein...
Y 12:22 PM
irishhockey
0 75
Learing about matter and what it is composed of, I'm spending a lot of time trying to wrap my brain around the idea...
Y 07:59 AM
phinds
18 470
Hello! I was wondering what would happen if you placed a piece of undoped Si in an external electric field (say,...
Y 12:04 AM
Sunfire
1 104
Hello everyone. I am a Hungarian born Australian theoretical/applied physicist. This is my first post on the...
Jul26-14 12:32 PM
steve_h
3 641
So if a Titanium Ion has a charge of +2, does that mean it has a whole charge of twice the electron charge....so 2Xe?
Jul26-14 08:02 AM
adjacent
3 333
Hello. I have been in contact with some papers that use DFT softwares for calculating properties of solids,...
Jul25-14 03:25 PM
Useful nucleus
3 365
I knew this may not be possible, but I was wondering if you can compare kinetic energy with the energy that makes up...
Jul25-14 03:06 PM
mathman
3 300
although the distance from the nucleus and shielding effect is more for 4s orbital than a 3d orbital ,but yet the...
Jul24-14 04:56 AM
DrDu
2 326
what are the different mechanisms that cause plasma emission?
Jul23-14 11:34 PM
Greg Bernhardt
1 813
Hello all, Does anyone knows what is the exact energy gap of Titanium Nitride (TiN) film? Is it indirect band gap...
Jul23-14 11:34 PM
Greg Bernhardt
1 858
How is it that certain electronic goods are designed to fail? Planned Obsolescence is just that, planned. So what goes...
Jul22-14 07:25 PM
analogdesign
2 672
Hello everybody, this is my first time being here. I am a beginner learning some introductions on Bose-Einstein...
Jul21-14 07:57 AM
DrDu
1 667
Hello! I was just having a hard time understanding how reverse bias works for a p-n junction. Put simply, why don't...
Jul21-14 12:52 AM
analogdesign
4 1,276
i search all over the web but i cannot find the definition. Although I find all the literature saying that metal have...
Jul21-14 12:50 AM
analogdesign
2 1,025
It's known that the Density of States in 2D is given by, g_2(E)dE = \frac{a^2m}{\pi\hbar^2}dE The density of...
Jul20-14 10:29 AM
rigetFrog
1 858
I'm having difficulties understanding the role of scattering on phase coherence in the Aharonov Bohm Effect. In...
Jul18-14 01:14 PM
M Quack
1 1,296
Hello I am trying to fabricate a Si reflecting solar cell. When a Solar cell is exposed to radiation and connected...
Jul17-14 01:05 AM
M Quack
3 1,653
This question is directed at resident theoretical electron physicists in PF Regarding Azimuthal Quantum Energy...
- - -
Hi, I'm studying the p-n junction and I'm a little confused about the depletion layer that forms. I understand how...
Jul16-14 01:35 PM
marcusl
2 338
Hello all, My lab recently purchased a deformable lens, which can change its focal length from 140 mm to 40 mm and...
Jul14-14 10:36 PM
Simon Bridge
12 1,091
According to solid state texts in Brillouin zone borders where diffraction condition satisfies we have a band gap....
Jul14-14 06:28 PM
rigetFrog
3 480
To simplify this question, let's say the ocean is 3800 meters deep and 1 meter wide in either direction. Now let's add...
Jul14-14 04:34 PM
M Quack
2 318
I have been looking into broadening mechanisms and I'm stuck at trying to provide a physical explanation for power...
Jul13-14 03:36 AM
Carnot
3 1,052
Hi, there I am reading the book called "Atom-Photon Interaction", the chapter of " Radiation considered as a...
Jul12-14 11:54 PM
rigetFrog
2 1,516
I am reading section 8.5.1 of this book (page 442 of the book, page 465 of the pdf). The author claims the...
Jul12-14 11:51 PM
rigetFrog
2 1,461
A new spintronic LED was invented by Utah physicists. ...
Jul12-14 11:48 PM
rigetFrog
8 1,859
In ARPES measurements, people say that the laser light cannot cover a wide area of momentum space whereas the...
Jul12-14 04:46 AM
vatlychatran
4 1,334
I'm new here and have a very basic question that I haven't been able to see answered here or elsewhere, so forgive the...
Jul10-14 06:28 PM
mrhagerty
3 747
What is the proof for quantisation of electrons energy around an atom?
Jul10-14 04:22 PM
M Quack
14 1,537
I need help with something that i seemed to remember was fairly easy, but just can't seem to find the simple formula...
Jul10-14 04:15 PM
mfb
1 632
Hi all, I'm working on a Green function chapter of my dissertation, am referencing the equation, G(k,\omega) =...
Jul10-14 02:02 PM
csmallw
3 825
hello, i need the values for the absorption cross sections of positive hydrogen ions for a specific set of...
Jul10-14 03:18 AM
Raezeman
5 820
to the untrained eye electrons and protons seemed to be very different, different size, mass and composition but they...
Jul9-14 03:02 PM
Filby
10 1,096
Suppose we have an interface between a semiconductor and a liquid electrolyte that contains a redox couple whose redox...
Jul9-14 12:05 PM
itaischles
4 1,615
Hey guys, I've recently read about the Tavis-Cummings and Dicke models and I got a little bit confused about them....
Jul9-14 06:20 AM
f95toli
1 821
Why is Bohr's model of an atom not able to explain the spectrum of atoms other than hydrogen? Can you give an example?...
Jul9-14 03:14 AM
Phy_enthusiast
9 1,229

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