subject
Physics, 21.08.2019 02:30 kevingilbert1210

The energy e of an electron in the conduction band of a one-dimensional metal is given by asin2(ka) e = where a is a constant, k is the electron wavevector, and a is the atomic spacing. (a) determine the width of the first brillouin zone. (b) if a 2 x 10-10 m, the fermi wavevector is 2.618 x 103 m-1 and the fermi energy is 1 ev, determine the effective mass of electrons at the fermi level (c) this material is found to generate phonons when exposed to infrared light. in point form, describe a mechanism to account for this phenomenon.

ansver
Answers: 1

Other questions on the subject: Physics

image
Physics, 21.06.2019 22:30, tladitidimatso1783
A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?
Answers: 1
image
Physics, 22.06.2019 09:00, perezsamantha3oqr0za
As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy
Answers: 2
image
Physics, 22.06.2019 18:30, kayleahrayne
Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)
Answers: 3
image
Physics, 22.06.2019 19:30, chelseayazzie16
What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical
Answers: 2
You know the right answer?
The energy e of an electron in the conduction band of a one-dimensional metal is given by asin2(ka)...

Questions in other subjects:

Konu
Mathematics, 18.02.2021 03:30
Konu
Mathematics, 18.02.2021 03:30
Konu
Mathematics, 18.02.2021 03:30