Solid state Definition and 278 Threads

Dear every body. I have one problem of my homeworks that I can solve. Please help me! Thank you. Construct in k-spaceof the first 4 Brilloun zones of a square lattice in the extended zone scheme & show that the 1st, 2nd, 3rd, 4th Brilloun zones have all the same area. Construct these...

Hi everyone, I am currently studying solid state physics from the book by Kittel(8th ed). But in this book, the chapters are like a summary of each topic and detailed explanations do not exist. While proving a formula, several steps are omitted and just the results are given. For this reason...

Hi I am looking for some good solid state physics textbooks. Can anyone who has taken courses in solid state physics direct me to a good introductory book?

In quantum field theory of high energy physics one encounters so called anomalies like e.g. of the kind discussed in this thread: https://www.physicsforums.com/showthread.php?t=406540 As far as I understood, it basicallymeans that the classical theory has a higher symmetry than the qft. Does...

Homework Statement On crystal which containing ions V^{4+}, electronic configuration 3d^1, was applied magnetic field B_0=2,5T. If the temperature is 1K, find the relative concentration of electron states population \frac{N_2}{N_1}. In what temperature we should expect 99% ions in ground...

a silicon crystal is doped with 10^15 cm^-3 atoms of antimony and its also doped with 10^16 cm^-3 atoms of boron will the crystal be type p or type n what will be the concentration of minory charge carriers and majority charge carriers ? Boron has 3 electrons in outer circle and...

"we want to calculate the heat enrgy of a gas molecule n - is the number of molecules per volume v_th - is the average speed of gas molecule L - is the distance which travels one molecule in a certain time we have six directions for which they travel +-x +-y +-z so in each time n/6 of...

Homework Statement An electron and a proton are each accelerated through a potential difference of 10MV. find the momentum in MeV/c and the kinetic energy in MeV of each using relativistic formulae and compare with the results of using the classical formulae. Are the particles moving at...

I recently completed a degree in Computer Engineering and am looking to pursue a Masters and eventually a PhD in Electrical Engineering; specifically in solid state devices. One of my concerns is the potential lack of knowledge in mathematics I may have. As a Computer Engineering undergrad I...

Homework Statement The radius characteristic of the volume occupied by each electron rs is required that rs>>((h^2)/(2m*kB*T))^(1/2). What is the significance of the length rs must exceed?

Homework Statement In the Drude model the probability of an electron having a collision in an infinitesimal time interval dt is given by dt/\tau. (a) Show that an electron picked at random at a given moment will have no collisions during the next t seconds with probability e-t/\tau. (b) Show...

The linked paper describes an experiment which is intended to provide for a basis for investigating solid state spin entangled electrons. Has solid state entanglement been demonstrated before? http://physics.aps.org/pdf/10.1103/PhysRevLett.104.026801.pdf

Homework Statement Hi all I can't seem to figure out, why semicodunctors do not have Fermi surfaces. At T=0K, there are no electrons in the conduction band, and thus there is no Fermi surface - all OK here. But at T > 0K, there are electrons in the conduction band. Why is it then that it...

Homework Statement Hi all. Say we are looking at a (pure) semiconductor at T=0 K. Now we turn on the heat, so only 1 electron jumps up to the conduction band per cm3, and likewise 1 hole is created in the valence band per cm3. Does this mean that the current density of this semiconductor is...

Homework Statement A crystal has a basis of one atom per lattice point and a set of primitive translation vectors of a = 3i, b = 3j, c = 1.5(i+j+k) where i,j,k are unit vectors in the x,y,z directions of a Cartesian coordinate system. What is the Bravais lattice type of this crystal...

please solution for this question in solid state A crystal has a basis of one atom per lattice point and a set of primitive translation vectors a = 3 i , b = 3 j , c = 1.5 (i + j + k) where i, j and k are unit vectors in the x,y and z directions of a Cartesian coordinate system. 1)What is...

Hi all Do you know of any interesting subjects in theoretical solid state physics? Are there any theories that have had a wide impact, e.g. in computers and such? Thanks in advance,

Homework Statement This is problem 5.2 in Kittel's Introduction to solid state physics: Estimate for 300 K the root mean square thermal dilation for a primitive cell of sodium. Take the bulk modulus as 7\cdot10^{10} [unit]. Note that the Debye temperature 158 K is less than 300 K, so that...

Hi, Is there in a Solid State (condensed matter) physics any function that describes the condition\ property of the system (material)? I mean like in a field theory when giving a Lagrangian of a fields it is the starting point to describe that system... Thanks

This isn't so much a question, just something I thought was interesting. I met with my peer mentor last week and she's doing research which has lead to the discovery of solid state D_{2}O in concrete, starches, and cellulose (all at STP). She's not sure where this is going to lead or what...

Hi all. I have two questions, which I hope you can help me with: 1) In my book (Solid State Physics by Ashcroft and Mermin) it says on page 436 that: "When the wavevector k is equal to pi/a (where a is the lattice constant), then the motion in neighboring cells are 180 degrees out of phase. "...

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...

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...

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...

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...