Condensed matter Physics - Statistics

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Answer Stats

Hint	Answer	% Correct
carrier mobility	ability of a charge carrier to move through a material in response to an electric field	0%
doping	adding/removing an electron from a semi conductor	0%
heat capacity	amount of energy a material can store per kelvin	0%
crystal	any solid with a repeated structure	0%
transistor	a pair of p-n junctions	0%
effective mass	apparent mass of a particle when responding to forces	0%
phonon	a quantum of energy	0%
wiedemann-franz law	assuming scattering times are the same, 2 transport processes are only different by heat capacity and charge	0%
lattice vector	a vector that describes the translational periodicity of a lattice	0%
work function	distance between fermi level and vacuum level	0%
depletion region	electrons and holes recombine with each other resulting in no net charge carriers	0%
hole	empty state in valence band due to excitation of an electron into the conduction band	0%
Brillouin zone	equivalent to a Wigner Seitz cell in reciprocal space	0%
insulator	in a filled band as many electrons move to the left as to the right	0%
metal	incomplete band filling creates a Fermi surface, electric field shifts Fermi surface so not as many electrons are moving to the left as the right	0%
diffusion current	majority carrier diffuse into minority region and recombine with majority carriers	0%
pauli exclusion principle	no 2 electrons can share the same set of quantum numbers	0%
substitution	one atomic species is swapped for another	0%
Wigner seitz cell	region about a lattice point that is closer to that lattice point than any other	0%
umklapp process	requires high energy phonons, direction of total linear momentum is reversed, responsible for heat resistance	0%
fermi surface	surface in reciprocal space that separates filled and unfilled states at absolute zero	0%
bloch's theorem	the eigenfunction of the wave equation for a periodic potential is the product of a plane wave and the potential that has the periodicity of the crystal	0%
fermi energy	the highest occupied electron state at absolute zero temperature	0%
drift current	thermally generated minority carriers drift into the majority region, swept by built in e field	0%
normal process	total linear momentum conserved, no heat resistance	0%
Matthiessen rule	total relaxation times is dependent on different sources (defects, impurities and phonons)	0%
recombination	union of electron and hole to return to a neutral state	0%

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