Solid state Definition and 315 Threads

In solid state we often have case \sum_{\vec{k}}F(\vec{k})=\frac{V}{h^3}\int_{I bz} F(\vec{p})d^3\vec{p} Integral goes into first Briolen zone. We can always say that \frac{V}{h^3}\int_{I bz} F(\vec{p})d^3\vec{p}=4\pi \frac{V}{h^3}\int^{\infty}_{0}F(p)p^2dp In 2D we will have...

Hi When talking about crystals, then what is a "conventional cell"? I know what a primitive cell is, but not what a conventional cell is. E.g. see this: http://www.scribd.com/doc/91701/Crystal-Lattices Here they do not describe a conventional cell, but just mention the name.

What is the difference between a solid state relay and a semiconductor contactor? Can both switch ac loads? This a link to a company that distinguishes between the two. http://library.abb.com/global/scot/scot209.nsf/veritydisplay/da7ec357f6a7461cc12573ad004e1e83/$File/2CDC110004C0205_07.pdf

I(\vec{n}-\vec{m})=\frac{1}{N}\sum_{\vec{k}}I(\vec{k})e^{i\vec{k}(\vec{n}-\vec{m})} I(\vec{n}-\vec{m})=\frac{1}{\sqrt{N}}\sum_{\vec{k}}I(\vec{k})e^{i\vec{k}(\vec{n}-\vec{m})} In which cases is better to use first and in which second relation? N is number of knottes of lattice. And when I can...

Hello everyone, I need to prepare a poster which presents an experimental technique, describes how the technique operates technically and describes one quantity it measures and connect between measured quantity and physical properties of solids. Is there any suggestion for topics which fulfill...

Homework Statement Show that the fraction of electrons within kT of the fermi level is equal to 3kT/2Ef, if D(E) = E^1/2. Homework Equations f(E) = 1 / ( exp(E-Ef)/kT + 1 ) fermi distribution N = integral from 0 to inf of D(E)f(E)dE = total no. of electrons The Attempt at a...

Hello, In few days, I have an examination, and I still have some dark zone in my head! If somebody could help me by giving me some advices/answers/way of reflexion/books to consult, it could be very great! Here is my questions: How to determine energy levels and wavefunction of the...

Homework Statement If silver melts at 9620C and contains an intrinsic relative concentration of 3*10^(-7) lattice vacancies, estimate the energy required to remove an atom from the interior of the crystal lattice. Homework Equations The above is a past exam question and the equation...

calculate the density of states and average energy for an elctron gas in 1d,2d and 3d I know the number of states is N= \int_{0}^{infinity} g(e)f(e) de and E = \int_{0}^{infinity} g(e)ef(e) de and g(e) =dN/de

HEY...so here I go! Abstract: To determine the level of independence between an introductory solid state course to an introductory quantum mechanics course. The deal is I’m going in my third year of a Bsc with honours (yes Canada lol) and specialization in Physics-Mathematics and I’m...

I'm currently undertaking a course in Solid State Physics and my professor has asked us to undertake some work in the free software 'Octave'. I have not had any programming experience in my life and I am feeling very much out of my depth. The lecturer gave us an initial file with the relevant...

1. Platinum is silver and shiny. Why? 2. Aluminum oxide can be either transparent, red or blue. How? 3. Quartz is transparent. Why?

I was wondering if there is a simple way to make a power inverter (DC to AC) that is solid state, and does not use a coil. Actually, I'm not sure if there is a difference, but "pulsing DC" might be more what I'm thinking. I don't necessarily need the current to flow in reverse, but just to...

Greetings Next semester I'll have solid state physics, statistical physics and and introductionary course in elementary particles. So I was wondering maby those of you who had those subjects could recommend me some books. I really liked books by Griffiths so far. Especially the one on...

i am new to solid state physics.i have tried kittel already.i found it pretty boring.can anybody suggest any other book on this subject?

Homework Statement Using geometrical arguments or otherwise, derive how the energy of an electron in the second Brillouin zone may be less than the energy of an electron in the first zone. [3] Homework Equations The Attempt at a Solution I'm thinking this has something to do...

My professor has said several times that if you increase the potential (electrostatic) you will get a lower energy in terms of a band diagram. In particular, I have been working with MOS-Capacitors and this seems to be the case. For example for an n-type semiconductor. If you apply a...

In future HDD will be replaced by solid state disk,SSD will become the mainstream. Solid State Disk （SSD）： it is a general definition to distinguish traditional mechanical drives which depends on complex mechanical parts and control circuits, bascially any drive with electronics storage media...

Hi, I'm new to the forums and I'd like to bounce an idea off of someone :biggrin: Although I've got a physics degree, I have successfully managed to forget a lot of it as people tend to do when not practicing, and I was wondering if someone would kindly pick some holes in an idea I've had...

Hi Everyone, I am a second year graduate student in physical chemistry at a top tier university. As an undergrad, I took Calculus 1-3 during my first two years, but then I didn't take any more because it wasn't required for my major and I was told that I didn't really need it. (I just took...

Homework Statement For the 1st problem, part (b) at the end of chapter 1, I am not certain what the question means. The question is " In the Drude model the probability of an electron suffering a collision in any infinitesimal interval dt is just \frac{dt}{\tau}. Show that the probability...

packing fraction of body-centered cubic lattice -- solid state physics Homework Statement This is part of a series of short questions (i.e. prove everything in Kittel Ch. 1, Table 2): Prove that the packing fraction of a BCC (body-centered) cubic lattice is: 1/8 * pi * \sqrt{3}...

I've gone through undergrad courses of QFT, Solid State Physics and Quantum Statistical Physics but the first one didn't cross path with second and third so I only got taste in QFT applications in Solid State Physics through reading Zee's "QFT in a nutshell". My first impressions was WOW! Solid...

Dear all, I am trying to reproduce the results from a paper in computational physics and it says that for their simulation, they used a computational supercell of palladium of 27 atoms in a periodic system. How can there be 27 atoms considering that in solid state, the palladium has a fcc...

Homework Statement Starting from the wave function of free electron and applying first order approximation of time independent perturbation theory find wave function of electron in periodic potential. Homework Equations Potential energy in reciprocal space E_{p}(\vec{r}) = \sum_{\vec{g}...

Last summer I spent a few days at RIT taking some seminars on engineering and what different courses would be like, one of the professors was demonstrating some of the materials we would get to use and he produced a an object consiting of two metal plates sandwiching some other sort of material...

I do not understand the difference between diffusion and migration is case of anion/cations. Thank you!

I'll be in my senior year next year, taking Solid State in the fall. I've taken Thermal, E&M, QM, Modern, Mathematical, Stat Mech, and a few circuit labs. I'm just not sure if taking SS would be worth it for me. The course description makes it out to be what we just did in Stat Mech this...

what are the research oppurtunities in solid state? i most probably wud pursue my engg. phsycis at a place where the course is 50% physics and 50% solid state,semiconductivity...how good is the scope of research in these areas in the coming years? well...

Hello all, Im officially doing one of my last subjects in my degree (Solid state physics) but i think the subject is going to kill me! Does anyone know any good websites explaining the basics of K Space, Brillouin Zones Bloch waves, phonons, DOS Etc. Any help would be much...

Can someone please explain to me the concept of the hole as it pertains to solid state physics? I don't understand how it works.

Good evening , I will resolve a small problem but I don't know how I can do, In l approximation of the strong coupling, the strucure of band of the electrons in a certain crystal is given by: E(k)=-[E1*cos(kx.a)+E2*cos(ky.b)+E3*cos(kz.c) ] Show that for a band very little filled, the...

Does anyone here know of a free periodic table (downloadable/printable) geared towards the needs of solid state? More specifically a table offering Lattice constants/crystallization systems, Mean Debye Temperatures etc. Ideally it would be a perfect copy of the periodic table featured by...

Now I can obviously just search the internet for information about what these areas of physics are about, but what I want to know is more specific information about these areas that I can't find. Like what areas of Physics are used in Optical physics or maybe more specifically Quantum...

Homework Statement What are Bloch functions? Explain briefly how these function are used in the quantum mechanical modelling of crystals. Homework Equations \psi _k (r)=u_k(r)exp(ik.r) The Attempt at a Solution Now I know that a bloch function is a one-electron wavefunction that is...

Homework Statement Chapter name: Solid state Topic: close packed structures in crystalline solids Sub-topic: close packing in 3D In my Chemistry book I read: Now let us suppose there is 1 sphere only. Can anybody explain to me where the one octahedral void and two tetrahedral voids...

Homework Statement The ionisation energy of Li is 5.39eV and the electron affinity of F is 3.40eV. Give a lower bound for the modulus of the crystallisation energy of Li+F- Homework Equations Not entirely sure of the equation to use, but have this one in my notes: U = -...

Homework Statement The ionisation energy of Li is 5.39eV and the electron affinity of F is 3.40eV. Give a lower bound for the modulus of the crystallisation energy of Li+F- Homework Equations Not entirely sure of the equation to use, but have this one in my notes: U = -...

Homework Statement The specific heat of metals is dominated by the electronic contribution at low temperatures, and by phonons at high temperatures. At what temperature are the two contributions equal in rubidium? Note that \gamma=2.41\frac{mJ}{mole K^2} for rubidium. Briefly describe...

Homework Statement A crystal with unknown lattice spacing is studied using electron diffraction. The electron wavelength is 3.7pm. a) assuming a simple cubic lattice, what is its size if the smallest diffraction peak is at 0.5 degrees? b) At what angle is the nxt peak? c) At what...

Hi, I was just wondering if it is possible to jump straight into a Masters Degree in Physics by taking the GRE and not completing all of the required and elective undergraduate courses. I am currently a sophomore in college and am majoring in Aerospace Engineering. A field of Aerospace...

Hi, I've been hearing people talk about using solid state switches/relays as replacements for relays on boards and I was wondering if someone could explain to me the difference between a solid state relay and something like a MOSFET or transistor. Why not just use one of those? Thanks, Jason O

Homework Statement The element Po forms a crystal with a simple cubic structure of spacing (3.34A). What is the maximal wavelength of radiation that is diffracted from a powder of that crystal Homework Equations N/a, however I thought that it may well be something to do with the bragg...

Can anyone explains the concept of effective mass in solid state physics to me? Thanks a lot~:smile:

Homework Statement please can anyone answer this question consider the parallel arrangement of the following two circuit branches , one branch consists of a capacitor C1 , the other of a capacitor C2 series with resistance R . show that this circuit is equivalent to a capacitor with a...

1 few questions here Does anyone know websites that i can get solid state physics problems and answers. 2ndly How do you show a semiconductor of type 1 behaves as a perfect diamagnet. I know by drawing a diagram but don't how to show it 3rdly what is the...

I am doing a directed study in solid state technology next semester and I need to find a book I would like to use. The professor mentioned this textbook by ben streetman. I have been reading through it myself and while it is a decent book, I figure there might be something better out there for...

Hey everybody, I apologize if this is not in the right forum, or if it is not within the scope of this website. I would like to go to grad school in the field of nanotechnology. I'm a physics and math major at the moment, but I'm not entire sure which field of physics would complement...

Hey everyone! I'm looking for a real good Solid State Physics Book! Can someone recommend me something? I have heard that Kittels book is really bad! Mortiss

Sooo, as this is my first time posting I thought I'd start off by saying hello to you all=) Anyway, the problem is as follows: Point defects in metals can cause additional electrical resistivity at low temperatures due to extra electron scattering which is proportional to the number of...