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1
lecture 15
conduction electrons in a periodic potential, Bloch's theorem, energy gaps at Bragg planes, Brillouin zones
HW #4 due
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2
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3
lecture 16
Born-von Karmen boundary conditions, Fourier transforms on a Bravais lattice, Schrodinger's equation for electrons in a periodic potential, Bloch's theorem more rigorously, crystal momentum and band index
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4
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5
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6
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7
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8
lecture 17
Reduced, repeated, and extended zone schemes for electronic band structure, average velocity of a Bloch electron state, density of states, van Hove singularities, weak potential approximation for electron eigenstates
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9
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10
lecture 18
Weak potential approximation and the band gap, velocity of an electron at a Bragg plane, metals and insulators
HW #5 due
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11
lecture 19
Weak potential approximation in 2D and 3D, Bravais lattice with a basis, Brillouin Zones and the Fermi surface in the weak potential approximation, open and closed Fermi surfaces
make-up lecture, 12:30-1:45pm, in BL 375
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12
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13
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14
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15
lecture 20
The tight binding approximation for band structure, the s-band, Fermi surface in tight binding
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16
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17
lecture 21
Hybridization of atomic orbitals, variational derivation of tight binding
HW #6 due
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18
lecture 22
Tight binding band structure for graphene, σ, σ*, π and π* bands
make-up lecture, 12:30-1:45pm, in BL 375
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19
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20
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21
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22
lecture 23
Graphene continued, Wannier function, spin-orbit interaction
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23
Thanksgiving Recess begins at noon
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24
Thanksgiving Recess
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25
Thanksgiving Recess
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26
Thanksgiving Recess
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