Conductors, Insulators and Semiconductors

What is the Law of Dulong and Petit for specific heats?

Why does the specific heat drop below the Dulong&Petit value for low temperatures?

Describe the contributions of Einstein and Debye to the understanding of the specific heats of solids.

Since electrons contribute to electrical and thermal conductivity at room temperature, why don't they contribute to the specific heat?

Describe the energy band model of solids and how it contributes to the understanding of conductors and insulators.

What is meant by the "Fermi energy" or "Fermi level"?

How does the Einstein-Debye treatment of heat capacity account for the temperature variation of specific heat?

Describe the microscopic mechanisms which cause metals to obey Ohm's law for electrical conduction.

How can the electron speed in a metal be calculated? How does the "Fermi speed" compare with the drift velocity of electrons as a result of an applied electric field?

How do the electronic properties of an intrinsic semiconductor differ from those of "doped" semiconductors?

Describe the properties of n- and p-type semiconductors

Describe the nature and utility of a pn junction. Why does it conduct in one direction but not in the other? How do you make a transistor from pn junctions?

What is the Hall effect? What difference does it make when you add quantum properties to the Hall effect?

Homework set #14
* Law of Dulong and Petit

* Einstein model

* Debye model

* Electron specific heat

* Microscopic Ohm's law

* Electron density

* Band theory of solids

* Fermi level

* Intrinsic semiconductors

* Doping of semiconductors

* n-type semiconductors

* p-type semiconductors

* p-n junction

* junction diode

* transistor

* Hall effect

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