Physics, 27.12.2020 16:00 MathChic68
A chain consists of alternating atoms of types A and B. There are N atoms of each type. Each atom has one electron in an s-orbital. The separation between adjacent atoms is a/2, so that the lattice constant is a. Assume periodic boundary conditions. Assume further that the orbitals on different atoms are orthogonal and that interactions exist only between nearest neighbors, and that the matrix element of the Hamiltonian between orbitals on adjacent atoms is -t (these are the same assumptions we made in the tight binding model in graphene).
Requied:
Calculate and plot the energy E as a function of k in the first Brillouin zone.
Answers: 1
Physics, 21.06.2019 17:10
An object is moving east, and itβs velocity changes from 65m/s to 25m/s in 10 seconds. which describes the acceleration?
Answers: 1
Physics, 22.06.2019 05:10
Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?
Answers: 2
Physics, 22.06.2019 11:00
The charge on an electron is 1.60218 Γ 10β19 c and its mass is 9.10939 Γ 10β31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.
Answers: 3
A chain consists of alternating atoms of types A and B. There are N atoms of each type. Each atom ha...
Social Studies, 10.02.2021 05:00
Mathematics, 10.02.2021 05:00
Mathematics, 10.02.2021 05:00
Mathematics, 10.02.2021 05:00
Computers and Technology, 10.02.2021 05:00
Mathematics, 10.02.2021 05:00
History, 10.02.2021 05:00
Mathematics, 10.02.2021 05:00
Health, 10.02.2021 05:00