The nearly-free electron model, Physics

Assignment Help:

Consider an electron in a simple one-dimensional periodic potential. The energy of the electron will vary periodically due to the influence of the periodic potential, and can be described by an energy-wavevector relation:
E(k)=-Acos(ka)
where a is the lattice constant and k is the Bloch wavevector.
a) Obtain an expression for the velocity of a wavepacket as a function of k

Related Discussions:- The nearly-free electron model

Zener diode and its application, 1.what is zener diode? 2.structure of zene...

1.what is zener diode? 2.structure of zener diode? 3.operation of zener diode?

Motion, a ball is thrown up and come in the hands of thrower find heigth

a ball is thrown up and come in the hands of thrower find heigth

#title.electromagnetic inductin., can i download the matter?

can i download the matter?

Electrostatistic, define electrostatistic

define electrostatistic

In the nucleus of 20 ca 40 there are, In the nucleus of 20 Ca 40 there ...

In the nucleus of 20 Ca 40 there are: (1) 40 protons and 20 electrons (2) 20 protons and 40 electrons (3) 20 protons and 20 neutrons (4) 20 protons and 40 neutrons

Explain frequency, Frequency The number of vibration done per second by...

Frequency The number of vibration done per second by an oscillation body is known its frequency. It is denoted by V. The S.I unit is Hz. V=1/T

What is elasticity, What is elasticity explain it briefly..

What is elasticity explain it briefly..

State brewsters law, Q. State Brewster's law. Brewster's law the digres...

Q. State Brewster's law. Brewster's law the digression of the polarising angle is numerically equal to the refractive index of the medium. That is tan ip = μ

Significant numbers has in a measured quantity, Rules to verify how many si...

Rules to verify how many significant numbers has in a calculated quantity: 1. All nonzero digits are significant. As like 457 cm has three significant values; 0.25 g has two si

Descrieb the types of magnetic material, On the basis of mutual interaction...

On the basis of mutual interactions or behavior of several materials in an external magnetic field, the materials are dividing in three basic categories. (i) Diamagnetic materi

Write Your Message!

Name

Email id

Message

Verfication Code

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

User Account

All Pages