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10. Appendix

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Dielectric function 117, 246, 253, 261, 315, 333<br />

– including phonons and free carriers 338<br />

– microscopic theory 254<br />

– of GaAs 248, 253<br />

– – theory vs experiment 265<br />

– of Ge 253, 255<br />

– – theory vs experiment 266<br />

– of Si 254<br />

– of wurtzite GaN 334<br />

– – theory vs experiment 264<br />

Dielectric tensor 245<br />

Difference modes 377<br />

Differential scattering cross section 383<br />

Diffusion of carriers 206<br />

Dilation 124<br />

Dilute magnetic semiconductors 4<br />

Dimension of a representation 35<br />

Dirac delta-function 183<br />

Direct absorption edges 268<br />

– forbidden 273<br />

– of Ge 349<br />

Direct bandgap semiconductor 136, 215<br />

Direct forbidden transitions<br />

– dependence of  i on ˆ 277<br />

– in Cu 2O 287<br />

Direct lattice 23<br />

Direct product of representations 41<br />

Direct sum of representations 40<br />

Direct transition 259, 449<br />

Dislocation 5, 12, 160<br />

Disorder 539<br />

Dispersion<br />

– of J z = 3/2 and J z = 1/2 hole bands in QW’s<br />

484<br />

– of J z = 3/2 and J z = 1/2 hole bands under<br />

uniaxial stress 484<br />

– of the Ge(111)-c(2 × 8) surface bands 460<br />

– Dispersion relations 185, 250<br />

Displacement patterns of phonons in<br />

AlAs/GaAlAs SL’s 501<br />

Displacement vectors 42<br />

Distribution function 206<br />

– Boltzmann 207<br />

– Bose-Einstein 126<br />

– Fermi-Dirac 206<br />

Domain in Gunn diodes 232<br />

Donor acceptor pairs (DAP)<br />

– Coulomb attraction 356<br />

– distribution 423<br />

– luminescence spectra 373<br />

– – in GaP 357, 358<br />

– – lineshapes 357<br />

– – selectively excited in ZnSe 374<br />

– – time resolved 361<br />

– – Type I 357<br />

– – Type II 357<br />

Donor electron 161<br />

– Bohr radius 167<br />

– energy levels in Si 172–173<br />

Donors 160<br />

– associated with anisotropic conduction bands<br />

171<br />

– binding energy in zinc-blende-type<br />

semiconductors 169<br />

– double 160<br />

– hydrogenic 166<br />

– in Si photoconductive response 571<br />

– shallow 166<br />

– tight-binding method 194<br />

Doping superlattices 477<br />

– schematic diagram 578<br />

Doppler broadening 372<br />

Double barrier QW structure 526<br />

Double barrier tunneling devices<br />

I–V characteristics 527<br />

Double groups 72<br />

– representation 98<br />

– notations 64<br />

Double monochromator 386<br />

Drift velocity 205, 226<br />

– dependence on electric field 226<br />

– – in GaAs 231<br />

Drude edge 310<br />

Drude model 306, 310<br />

DX center 170, 182, 197<br />

Dye laser 386<br />

Dynamic effective charges 304<br />

Dynamic range 387<br />

Dynamical matrix 110<br />

Dyson equation 187<br />

E<br />

E 0 critical points 268, 316<br />

E 0 gap 70, 77, 266<br />

E 0 + ¢ 0 critical points 316<br />

E 0 + ¢ 0 gap 266<br />

E 0' transition 267<br />

E 1<br />

– critical points 268, 290, 316<br />

– excitons 290<br />

– transitions 266<br />

E 1 + ¢ 1 critical points 268, 290, 316<br />

E 1' transitions 267<br />

E 2<br />

– critical points 268, 316<br />

– peak 267<br />

Subject Index 759

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