Lecture 12: Semiconductors

Solid State Physics by Prof. Carlson

Feb 23, 2006Education

Today is all about semiconductors. We talk about how to dope them. Donor atoms "donate" electrons into the conduction band, giving n-type semiconductors, with mostly electrons carrying current. Acceptor atoms "accept" at...

Related Episodes

Continue listening to more episodes from Solid State Physics.

Final Review 1

Apr 27, 2006

This is the first of a 2-part review for the final exam. HREF=" Audio

Lecture 26: Landau Levels

Apr 25, 2006

A metal in a magnetic field has its Fermi sea sectioned into onion-like layers, shaped like cylinders. Th...

Lecture 25: Vortices

Apr 20, 2006

There are many more phases of matter than solid, liquid, and gas. Superconductivity is a different phase...

Lecture 24: Condensation Energy

Apr 18, 2006

When superconductors go superconducting, the energy gain is called the condensation energy. Lecture Audio

Lecture 23: Superconductivity

Apr 13, 2006

The quantum stability of a superconductor ensures that electrons can carry current perfectly, without los...

Lecture 22: Antiferromagnets

Apr 11, 2006

We finish off the low temperature corrections to the magnetization in a ferromagnet due to spin wave exci...

Lecture 21: Mean Field Approach to Ferromagnetism

Apr 6, 2006

We started off today with a demonstration of Barkhausen Noise in ferromagnets. (Your refrigerator magnets...

Lecture 20: Spin Waves are the Goldstone Modes of Ferromagnets

Apr 4, 2006

Ferromagnets spontaneously break a continuous symmetry -- that is, when the net magnetization develops, i...