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10. Appendix

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– – LA phonons 512<br />

– – LO phonons 517, 519<br />

– resonant tunneling 581<br />

– schematic diagram 578<br />

– short-period 486<br />

– Stark ladder 580, 581<br />

– strained-layer 470<br />

– Tamm surface states 581<br />

Surface core level<br />

– InAs 455<br />

– oxygen effects 455<br />

Surface depletion layer 462<br />

Surface effects in photoemission 457<br />

Surface energy bands 455, 458<br />

– Ge(111)-(2 × 1) surface 461<br />

Surface enrichment layer 462<br />

Surface gap of Si and Ge 460<br />

Surface phonon 338<br />

Surface plasmon 338<br />

Surface plasmon frequency 338<br />

Surface reconstruction 458<br />

Surface resonance 458<br />

Surface states 160, 445, 457<br />

Surface waves 338<br />

Surfaces and interfaces 208<br />

Symmetrization 41<br />

– of long wavelength vibrations 41<br />

– of basis functions 41<br />

Symmetrized wavefunctions 24<br />

– at X 98<br />

Symmetry operations 24<br />

– equivalent 24, 36<br />

– of diamond and zincblende structures 30<br />

– of methane molecule 26<br />

– of wurtzite crystals 143<br />

Symmorphic groups 28<br />

Synchrotron radiation 250, 428, 448<br />

– absorption spectra of Ge, GaAs, GaP 428<br />

– tunable 463<br />

T<br />

Tamm surface states 581<br />

TaS 2 574<br />

TaSe 2 574<br />

T d point group<br />

– basis function 37<br />

– character table 35<br />

– irreducible representations 36<br />

Tellurium 2, 157<br />

Temperature dependence of bandgaps 340<br />

– E 0 gap in Ge 320<br />

Temporal evolution of DAP transition 359<br />

Subject Index 773<br />

Tetrahedral bonding 2, 566<br />

– in amorphous semiconductors 566<br />

Thermal expansion 108<br />

– effect on gaps 341<br />

– low temperature anomalies 108<br />

Thermal ionization energy of impurity levels 181<br />

Thermalization time 225<br />

Thermoluminescene 319, 345<br />

Thermoreflectance spectra of GaAs 320<br />

Third derivative spectroscopy 327<br />

Third monochromator 386<br />

Third-order nonlinear susceptibility in Ge 341<br />

Thomas-Fermi screening 217<br />

Three-dimensional critical points (see also van<br />

Hove singularities) 267<br />

Three-step photoemission model 440, 446<br />

Threshold function in photoemission 433<br />

Ti doped sapphire laser 386<br />

Tight binding<br />

– Hamiltonian 89<br />

– model 83, 89<br />

– – comparison with EPM in Si 92<br />

– – interaction parameters for C, Si, Ge 91<br />

– – optical deformation potential d 0 153<br />

– – superlattice 474<br />

Time-reversal symmetry 82, 383<br />

Tin, phonon dispersion 120<br />

Transverse optical (TO) phonon 111, 297<br />

Total angular momentum 73<br />

Total decay rate 352<br />

Total energy 108<br />

Total recombination time 352<br />

Transfer matrices 528<br />

Transferability of pseudopotential 67<br />

Transformation matrix 33<br />

Translation operator 20<br />

Translational symmetry 20<br />

Transmission coefficient of electrons through a<br />

double barriers 529<br />

Transport of carriers<br />

– in parabolic bands 207<br />

– quasi-classical approach 203<br />

Transverse acoustic (TA) phonons 110<br />

– fast 142<br />

– slow 142<br />

Transverse charge 303<br />

– in zincblende-type semiconductors 305<br />

Transverse exciton energy 337, 363<br />

Transverse resistivity 538<br />

Transverse resonance frequency 294<br />

Transverse vibrations 294<br />

Triad screw axis 29<br />

Trimethyl gallium 7<br />

Trions 369

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