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