Solid state Definition and 315 Threads

Hello PF :) Homework Statement Consider a system of N electrons at temperature T = 0, each having a mass of m, confined to volume V. Find the number of electrons that: a) have momentum p<p_f/2 b) ... Homework Equations The relevant equations can be derived below: but here is a...

Hey there, What would you say the prerequisites are for learning Solid State Physics? Both mathematics wise and physics wise. Thank you :)

Hi, Is solid state device physics a must learn subject to design analog circuits. -Devanand T

Solving Boltzmann equation Homework Statement Taken from Ashcroft & Mermin, Solid State Physics, Chapter 16, Problem 2: "A metal is perturbed by a spatially uniform electric field and temperature gradient. Making the relaxation-time-approximation (16.9) (where g0 is the local equilibrium...

My choice of solid state Dc circuit breaker is the Mosfet, easily available( i got loads!) i want the mosfet to interrupt the circuit to protect the load from overvoltages This is what I've done so far, please help its not working the way i want it to. note to mods: i also put this...

My choice of solid state Dc circuit breaker is the Mosfet, easily available( i got loads!) i want the mosfet to interrupt the circuit to protect the load from overvoltages This is what I've done so far, please help its not working the way i want it to. the resistor connected to the...

Hi, I am currently struggling in my solid state device class, and i am looking for some links/site that could help me understand more about such. please help! Thank You!

Homework Statement Explain why electrons carry a net energy but not a net current in the case of thermal conduction. Homework Equations n/a The Attempt at a Solution n/a Please help me understand this!

Homework Statement Sodium transforms from bcc to hcp at about T=23K. Assuming that the density remains fixed and the c/a ratio is ideal (1.633), calculate the hcp lattice constant a, given that the lattice constant a'=4.23 Angstrom in the cubic phase Homework Equations I can't find any...

Can anyone please recommend me a good book on undergraduate level solid state physics preferably with plenty of examples for self study? Thanks.

Homework Statement 1) Find the expression for the equilibrium interatomic distance as a function of A, n, and α 2) Determine the expression for the binding energy at equilibrium. 3) Calculate the constant n for NaCl, using the data from the Table 1.2 of Omar book and the fact that the...

Author: Charles Kittel Title: Introduction to Solid State Physics Amazon Link: https://www.amazon.com/dp/047141526X/?tag=pfamazon01-20 Prerequisities: Contents:

Author: Neil W. Ashcrof Title: Solid State Physics Amazon Link: https://www.amazon.com/dp/0030839939/?tag=pfamazon01-20 Prerequisities: Contents:

I've never heard it said before but it appears to me that all electrical current that flows in a solid state component system; processors, diodes, transistors, resistors, etc. is eventually dissipated as heat. What are your thoughts about this?

deciding between 2 grad courses next semester, solid state and stat mech. I've already taken the undergrad versions of both. Got an extremely low grade in solid state the first time, A in stat mech. Currently grad student in condensed matter physics. The solid state class will focus on...

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 have worked with softwares that help me simulate circuits (Hpice, Proteus, MultiSim), but is there a software that helps me simulate devices right from the level of the atom? For instance, I should be able to create a pattern of boron with silicon atoms, and then be able to replicate it 1...

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 +...

Solid State Physics Help Please! (Instrinsic->Extrinsic) Homework Statement 3 samples of silicon with donor densities of: 1st sample: 10^18 cm^-3 2nd sample: 10^16 cm^-3 3rd sample: 10^14 cm^-3 for each, find out at what temp the sample transitions from intrinsic to extrinsic behavior...

Homework Statement Trying to solve this integral \int_0^T \frac{dT'}{T'}\frac{d}{dT'}U(T',V) where the temperature dependent part of U is \Sigma \frac{h\omega}{\exp(\beta\omega)-1} The Attempt at a Solution using x = hw/T I find that I need to integrate \frac{x^3...

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 2. Determine the concentration of valence electrons in doped (a) Si (a = 0.543 nm) (b) GaAs (a = 0.565 nm) Homework Equations ? The Attempt at a Solution This is the problem, I don't really know what they're looking for. I know what valence electrons are, but...

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...

Homework Statement There is a Ar cube crystal with Lenard jones potential: V^{L.J.}=-\alpha/r^{6}+\beta/r^{12} We know the volume V, the parameters of the L.J. potential, and the mass of the Ar atom (m_{Ar}). Determine the phonon density of state. (D(ω)=?) Homework Equations...

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 A material has 104 atoms in its primitive cell with a speed of sound of 1500 m/s. It is well above the debye temperature. From Cv=3kb per atom, we calculate the volumetric heat capacity of 1.4*10^6 J m^-3 K^-1. What fraction of he heat capacity is in the acoustic branches...

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...

I am trying to figure out what the actual efficiency of solid state hydrogen storage is. So how many kg of hydrogen can you store in a Xcm3 of metal hybride solid state storage. I was trying to find a conversion and only found a metric that was 500NL in a specific device that had some...

I was reading an article about phase transition, i read about thermodynamic process such as Adiabatic process - a process with no heat transfer into or out of the system. Isochoric process - a process with no change in volume, in which case the system does no work. Isobaric process - a...

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?