Solid state Definition and 278 Threads

Homework Statement I have an energy function as follows: E = \dfrac{\hbar^2}{2m_e}k_x^2+E_0\left(n_y^2+1\right) Where E_0 = \dfrac{\pi^2\hbar^2}{2m_eL_z} I am asked to plot this energy for x\in ]-L_z/2;L_z/2[ I know everything but not the relation between k and x?. The Attempt at a...

Hi, So here is the contents of this Elementary Particles course: introduction to families of particles , relativistic kinematics applied to reaction cross-sections and decay rates; symmetries and conservation laws, isospin, strangeness, charm, beauty; parity and CP violation in weak...

I'm not that familiar with the inner workings of solid state relays, and I'm seeing an unusual anomaly in my circuit that I'm not quite sure how to explain. For my job, I'm running tests on some sensors. One of the requirements for the test is to turn the power to the parts on and off...

Other than the fan and hardrive, nothing else seems to be moving...

Homework Statement Hi guys, I don't reach the correct answer to an exercise. I'm following Ashcroft's book. I must find that the reciprocal of the bcc Bravais lattice is a fcc one and the reciprocal of the fcc Bravais lattice is a bcc one. Homework Equations If a_1, a_2 and a_3 are...

First post. Great to be here. :) So, I'm stuck in deciding which of these courses to take next semester. I'm a current rising sophomore at UT Austin who has just switched from EE to physics-still nervous about that decision, but that's a separate topic. I've already got Waves(the first...

Hi, What is the best solid state physics video course available online. So far the best one i have found is this one .. but it is just introduction to Solid State Physics

I'm an undergraduate looking for a good low level textbook to read this summer in order to learn what I can about Solid State Physics. I have 2 semesters of Chemistry and quantum mechanics. Any recommendations?

I am looking for some suggestions for Condensed Matter and Solid State books. I currently have a one semester undergrad (soon to be two semesters) of Quantum Mechanics background. I am especially skewed toward something along the lines of Dover books, since they are cheap, and some of them are...

Hi, I'm working on a homework for my solid state physics class and I'm having trouble with this question: Homework Statement "We have seen many cases in solid state physics in which you can apply the concept of uncertainty principle to estimate some quantity. Describe two examples of a...

Assume we have a solid state hamiltonian, which is ellectrons plus nuclei plus all possible interactions: H = T_{el} + V_{el-el} + T_{n} + V_{n-n} + V_{n-el} Is it wrong to write down a self-consistent system of Green functions for electrons and phonons? G_{el}=g + gSG_{el} G_{ph}=g +...

Why do LEDs and other light emitting solid state devices have a definite lifespan?

What is "kinetic capacitance" in superconductors or in solid state in general? Hi, I would appreciate it if anyone could explain to me what "kinetic capacitance" is, particularly in the context of superconductors or solids. I understand "kinetic inductance" which comes from the kinetic...

Is there a general level of vibration that describes most solid state matter that we can touch? Perhaps in hertz?

Homework Statement Tha band structure of a simple cubic lattice is given by, E = E_{0}-A(\cos k_{x}a+\cos k_{y}a+\cos k_{z}a) where a is the lattice constant and A is a positive constant. Find the effective mass for the electron at the values of k corresponding to the top and bottom...

Hello, I am not an electrical engineer but I do have a slight background in some electrical engineering concepts. My question is a general one about relays (more specifically solid state relays but I don't think that really changes my question). I understand that a relay gets a small input...

Might be an easy question (or not). What determines the band gap of an element? As far as I know, silicon is the most efficient single-element semiconductor because of it's small (but nonzero) bandgap. Next (as far as I know) is Selenium. I'm aware there are more efficient compounds, but...

Homework Statement An ohmmeter is sometimes used to determine the "direction" of a diode by connecting the ohmmeter to the diode one way and then reversing the ohmmeter leads. If the ohmmeter applies an emf of .5V to the diode in order to determine resistance, what would be the ratio of...

So I want to use this solid state relay, to fast switch an electromagnet. About 2 times a second. Weight: 112g Size:5.9 x 4.5 x 2.3cm Color : Grey Fast switching Reduced electromagnetic interference Output voltage: AC 24-380V Output current: 25A Input voltage: DC 3-32V Control Method: DC to...

Homework Statement Silicon at T= 300K contains acceptor atoms at a concentration of Na = 5*10^15 cm-3. Donor atoms are added forming an n-type compensated semiconductor such that the fermi level is 0.215 eV below the conduction band edge. What concentration of donor atoms are added...

Homework Statement Consider an electron gas in ONE and TWO dimensions i.e N electrons in a metal wire with length L or in metal sheet with area L^2. Pictures must be drwan of the fermi 'sphere' and the Fermi 'surface' . Why are the two words in quotation marks ? Homework Equations...

As part of my Intel Science Fair project "How to make Hydrogen a viable alliterative" I read that at 3,500,000 psi Hydrogen will become a "Solid" so that you can have more power in less space which will make the car much more efficient. I am doing this on a 1/10 scale. My question is what...

Homework Statement Homework Equations n\lambda = 2dsin(\theta) The Attempt at a Solution a) solving for d I get \frac{n*\lambda}{2*sin*(\theta)} = d substituting in the first value 50.85 to solve for d, with n=1 I get d= 1.754*10^-10m How do I solve the miller indices from the inter...

I have a B. Sc. in Electrical Engineering and I would like to work with photovoltaics / solid state device physics. My undergraduate degree is not quite enough to let me work in that field outright. So I'm looking to do a graduate degree. I applied for a 2-year M. Sc. in Physics program and I...

I know that the first solid solid state device is: A semiconductor diode what about transistors? Is it not a solid state device? Explain me the difference between solid state device and semiconductor device.

Here is the problem: The electron concentration in a region of silicon depends linearly on depth with concentration of 5x10^15 cm^-3 at surface (x=0) and 10^15 cm^-3 at depth of x=500nm. If the vertical electron current density in this region is constant at Jn=100 A/cm^2, calculate the...

Are all acid have covalent structure in solid state?

Hi guys, first of all I want to say that this forum saved me several and several times and I love it. I have a question for you related to absolute quantum yield of naphthalene determined with an integrating sphere. Do you have an idea how much should be? COuld you pass me a reference paper...

I am less than a novice regarding electronic issues and understanding circuits , and need help in terms of seeking a component. I am looking for a solid state component---?? ic--- that would act as a SPST switch. This switching device would be inserted into a simple dc circuit--( approx 10-15...

Homework Statement Consider a plane (hkl) in a fcc lattice, show the correspond miller indices (h1k1l1) in the primitive unit cell. Homework Equations The Attempt at a Solution so (hkl) intersect a/h,a/k,a/l in the fcc lattice right? but in the primitive unit cell of fcc, i...

Alternatives to "Mesoscopic Electronics in Solid State Nanostructures" Greetings. I'm having a course called "Quantum Electronics", and one of the textbooks is "Mesoscopic Electronics in Solid State Nanostructures" by Thomas Heinzel. However, I find the book is often skipping an explanation...

Hello! Does any of you know someone in Paris who is working on Solid State Physics using Quantum Field Theory formalism ? Thank you.

What does the ratio c/a mean in solid state physics? I have attached a table with a an example. Cheers

Hi everyone, I am have been looking here for a long time, but today is my first day registered. I will be active from now on =). As my first post, I would like to know about the basics and advice about the solid state tesla coil. I would like to do it for my final year project. Is it advisable...

If the difference isn't that much, then could a computer theoretically have A HUGE amount of RAM, simply by setting aside a significant portion of the SSD as virtual memory? Maybe a SSD external HD could also be used as virtual memory (for those of us who don't have internal SSD drives yet)

Homework Statement Hi Say I have the tight-binding dispersion given by E = -2ta cos(ka). When plotting this, then is it correct that the Fermi level is at the energies satisfying E = 2ta, i.e. a straight line in a (k,E) plot?

I do not know anything about quantum physics, but due to some timetable clashes i hv to take intro solid state and intro quantum phy in the same semester. One advisor said its ok and he said intro solid state phy is only abt memorizing crystal, but another advisor said it would be tough...

As solid state physics studies the structure of materials, it is often important to study and to understand molecular theory. This means that you should, for instance, know very well the properties of the states of electrons in atoms with more than one proton in the nucleous. You should also...

hi, i don't know how to determine bravais lattice from primitive translation vectors.The problem is as: A crystal with one atom basis, has a set of primitive translational vectors as a1=3i, a2= 3j and a3= (3/2)(i+j+k). What is the bravais lattice.

Vick's theorem help us to find average value of product of even number of operators. For example look the case of four Bose operators \langle \hat{b}_1\hat{b}_2\hat{b}_3\hat{b}_4 \rangle =\langle \hat{b}_1\hat{b}_2 \rangle \langle\hat{b}_3\hat{b}_4 \rangle +\langle \hat{b}_1\hat{b}_3 \rangle...

Hey, I've done a search here on this forum as well as the internet and can't find very many detailed Solid State physics books reccomendations. I am on a 3rd year class in solid state. The lectures are almost exclusively mathematics, as well as the notes. Id love for a book to follow the...

This concept of when things have higher kinetic energy, their molecules and atoms move more never got to me. I don't get how something having more kinetic energy will make the atoms spread apart and liquify, if enough radiation gets to an object (infrared) in order to reach its melting point, I...

Homework Statement I have just started solid state physics course and we got an assignment to choose one element that we are going to work with. Which element is interesting from a solid state physics point of view (and relatively not too difficult to work with)? Homework Equations...

Homework Statement Aluminium metal is FCC with lattice parameter a=0.405nm. suppose that n Al crystal is illuminated by a beam of neutrons with wavelength \lambda= 1.078 angstrom (a) determine the first 10 allowed reflections, in order of increasing scattering vector, counting...

Homework Statement NaCl is a face-centred cubic with a basis at Na(0,0,0) and Cl at (a/2,a/2,a/2) and lattice parameter a = 5.63 angstrom. calculate the separation between nearesr neighbours (Na and Cl). The Attempt at a Solution Just by looking at the NaCl structure the separation...

please name a descent book for solid state physics of undergradute level..please..pleasez. hi... i hav just joined my engineering course for electronics... and I desperately need a descent book for solidstate physics to embark on... note that I'm a begginer in Quantum theory..

Homework Statement Greetings everyone I have been been asked to write a 10 page essay on Quantum Energy levels in atomic, molecular, nuclear and solid state physics. My problem is that this is such a huge topic and my knowledge of quantum energy levels and solid state physics is limited...

Hello everyone, I am an undergraduate student and this year I am going to study Introductory Solid State Physics. My instructor has assigned us book of Charles Kittel. But the book has got terrible reviews on amazon. So I fear purchasing it. However there is an another book by Ashcroft that has...

I have found plenty of study materials, notes and links on Classical Mechanics and Quantum Mechanics. However I could not found any forum on this site that provides study materials of solid state physics. So please if you have got the link, please post it in here.

hi everyone... i am dong my project designing a 3d solid state hi everyone... i am dong my project designing a 3d solid state accelerometer.The accelerometer should detect and measure steps. Can anyone of you help regarding the design of it...