Solid state

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Question English Answer English
The energy required to change some body(mole, gram, cm^3) by some delta T.
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Heat capacity
A model for heat capacity 1. Treat each atom as an isolated harmonic oscillator and all atoms vibrate at the same frequency (w0) [this is wrong] 2. is population distribution. (phonos act like boson) 3. C=dU/dT 4. High T limit, right, Low limit, wrong
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Heat capacity of Einstein model
A model for heat capacity 1. an atom is a harmonic oscillator 2. linear and isotropic dispersion of frequency of phonons 3. High T limit 3kb, Low limit T T^3
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Heat capacity of Debye Model
1. Solid is period 2. traveling was solution has peridic boundary condition
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Bloch theorem
Periodic boundary condition which impose the restrictiin that a wave function must be periodic on a certain Bravais latticr
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Born-von Karman boundary condition
The trial wave-function will always give an expectation value larger than or equal to the ground-energy.
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Ritz variational medthpd, Ritz principal
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plasma frequency
Lorentz Drude model
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Lorentz Drude model
drude hall effect
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drude hall effext
hall resistivity
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hall resistivity
Larmor cycle
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Larmor cycle
bravais lattice
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bravais lattice
primitive cell
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primitive cell
wigner seitz cell
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wigner seits cell
cristallographic restriction theorem
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cristallographic restriction theorem
billouin zone
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billouin zone
quasi momentum operator
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quasi momentum operator
dirac point
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dirac point
van Hove singularity
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van Hove singularity
Born Oppenheimer approximation
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Born Oppenheimer approximation
Slater determinant
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Slater determinant
jellium minium
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jellium minium
Those transitions are those that involve a latent heat. During such a transition, a system either absorbs or releases a fixed (and typically large) amount of energy per volume.
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First order phase transitions
Those phase transitions are also called "continuous phase transitions". They are characterized by a divergent susceptibility, an infinite correlation length, and a power law decay of correlations near criticality.
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Second order phase transition
This magnetism refers to materials that are not affected by a magnetic field.
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Diamagnetism
This magnetism refers to materials like aluminum or platinum which become magnetized in a magnetic field but their magnetism disappears when the field is removed.
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Paramagnetism
This magnetism refers to materials (such as iron and nickel) that can retain their magnetic properties when the magnetic field is removed.
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Ferromagnetism
Kirchhof law
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Kirchhof law

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