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Feb2313 08:41 AM
ZapperZ

1 
20,751 
we know that at temperature above 0K, in semiconductor some electron collecting sufficient energy fron surroundings to...

Sep1208 12:36 AM
Defennder

1 
1,156 
why does light go through glass but not through other forms of matter?

Sep1108 06:50 PM
Pauli'sPennies

2 
2,516 
Hi,
In all the tutorials of DFT softwares I have encountered computing of the band structure for different systems...

Sep1108 08:23 AM
aplahemant

3 
3,153 
In case of indirect transition in an indirect semiconductor material, momentum as well as energy changes. I got from...

Sep1108 07:13 AM
ZapperZ

2 
3,509 
Hi everyone.
Is there anyone that can explane the band bending, whiche takes plane when a metal and a semiconductor...

Sep1008 01:26 PM
Excom

2 
4,067 
Right, hello!
The quantum free electron model for electrons in solids (in One dimension) says we need to use...

Sep908 11:02 AM
Dizzle

4 
3,748 
Hi everyone,
Recently I am working with a research which involves some semiconductors. In the basic level,...

Sep808 10:24 AM
Defennder

10 
4,015 
I'm trying to calculate how many carbon impurity atoms can fit into an FCC and BCC structure of Iron. It's given that...

Sep808 07:35 AM
naggy

0 
3,400 
Here's the issue I'm trying to wade through:
1. If you excite electrons from valence band to conduction band (with...

Sep708 08:35 PM
Modey3

4 
1,714 
Nitric Oxide is slightly polar. Is it ferroelectric?
Sai

Sep508 03:27 AM
sai2020

0 
1,279 
I am having trouble understand the crystal structure or copper oxide and what the first brillouin zone looks like.

Sep108 08:57 AM
Gokul43201

2 
1,780 
While reading papers on various topics in physics i have become very embarrassed with the meaning of such a word as...

Aug3008 07:57 AM
Minich

0 
1,397 
Atomic planes are defined as the reciprocal quantities 1/u' , 1/v' and 1/w' transformed to the smallest three integers...

Aug2908 02:50 AM
Narcol2000

2 
2,647 
Why doesn't BCS theory work for explaining cooper pairs in cuprate superconductors?

Aug2808 10:49 AM
Minich

21 
3,761 
Hello to every one. I'm presently embarking on a problem about electron emission under applied electric field. Of...

Aug2808 08:22 AM
ZapperZ

11 
1,989 
I tried to get a grasp on BCS theory by reading the Wikipedia article http://en.wikipedia.org/wiki/BCS_theory. It says...

Aug2808 04:25 AM
ZapperZ

11 
2,047 
From Wikipedia:
"Phonons are not always in local thermal equilibrium; they move along the thermal gradient. They lose...

Aug2708 07:19 PM
Gokul43201

5 
2,729 
I'm studying A2 (second year college) physics and im supposed to be finding out about the size of an atom and how it...

Aug2708 05:53 AM
jenko4292

6 
5,779 
I've gone through undergrad courses of QFT, Solid State Physics and Quantum Statistical Physics but the first one...

Aug2408 05:34 AM
tomkeus

6 
3,145 
I heard about a effect in semiconductors where you can trap a electron in a 2d plane. If you have a semiconductor...

Aug2308 01:10 PM
f95toli

1 
1,987 
I guess is Debye temperature dependent on temperature? I.e TD(T)?
Does anybody know a theoretical formula for...

Aug2008 04:56 PM
hugonot

8 
16,540 
For photon gas chemical potential is zero. It is because derivate of free energy with respect to number (T, V fixed)...

Aug2008 02:21 PM
ala

0 
1,538 
Could anyone tell me what happens to the MaxwellBoltzmann velocity distribution law under
Galilean transformation!!!

Aug1908 02:30 PM
weejee

1 
1,752 
Hey everyone,
This summer I'm working with an Asylum MFP3D Atomic Force Microscope as part of my research. One of...

Aug1708 12:39 AM
nickg

4 
1,537 
Hallo Everyone,
I am trying to find out what happens to the size of a water particle in the gas phase and water...

Aug1608 11:00 AM
hugonot

1 
7,830 
In one dimensional electron gas in charge density wave phase, as I know , the density of electrons will be periodic....

Aug1608 08:31 AM
Yiping

2 
2,178 
Recently I am confused by one question :
The problem of Coulomb explosion, the relationship of laser abation...

Aug1308 11:01 PM
gggarnet

0 
1,455 
Could someone explain me an elementary introduction to this phenomenon ?
i know that it is produced whenever an...

Aug1308 01:44 AM
badphysicist

1 
2,194 
Hello all,
I don't understand some things concerning reciprocal space. I know how it appears from quantum mechanics...

Aug1108 11:33 PM
Modey3

9 
3,042 
Hi all,
I'm doing a MEMS project, I have a cantilever beam with a mass at its end, I need to calculate the stress...

Aug908 08:03 PM
Andy Resnick

2 
2,920 
I understand the stages of matter, and how they can be altered under extreme conditions. but can there be new states...

Aug708 11:09 PM
WhiteRhasta

2 
1,171 
Can the Schroedinger equation be derived from first principles in BCS theory? Zapperz suggests the Madelung and...

Aug608 10:55 PM
Maaneli

8 
2,228 
Hi everybody,
I have the following homework assignment:
1. Derive the expression of density of state D(E) in...

Aug508 06:33 AM
malawi_glenn

1 
1,345 
Hello, I'm a business major who has recently stumbled upon the interesting phenomena of photonic crystals. After...

Aug208 02:46 PM
Cass20

0 
1,448 
Hello,
When the fine structure constant (a) is calculated from the electric and magnetic constants.
What does...

Aug208 11:16 AM
Count Iblis

18 
2,300 
I was looking at the values for the Van der Waals radius on various elements in wikipedia and noticed that Molybdenum...

Aug108 09:19 AM
Primordial

5 
3,073 
does someone know the parameters and the values for the resistivity formula for semiconductor, i know the formula its...

Jul3108 02:25 PM
DrStrange

0 
1,745 
This is the case with metals semiconductors polymers and ceramics I have checked on the web. Still looking for...

Jul3008 07:06 AM
ZapperZ

3 
1,823 
Hi folks, I've recently been studying point defects, but I can't seem to come across how the formation of fcentres...

Jul2808 10:54 PM
Gokul43201

1 
1,995 
Hi everybody,
I don't know how people use the k.p approximation for graphene sheets, while using the Dirac...

Jul2708 11:16 AM
afsaneh

0 
2,109 