K - crystalline solids
PX262 - K1 - electrons in crystalline solids
PX262 - K2 - reciprocal lattice and reciprocal space
PX262 - K3 - wavevector space and brillouin zone
PX262 - K4 - electrons in crystalline solids
PX262 - K5 - block wavefunctions, electronic energy bands and gaps
PX262 - K6 - energy gaps