## Proceedings of the International School of Physics "Enrico Fermi.", Volume 22N. Zanichelli, 1963 - Nuclear physics |

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Page 18

This particle is called a positive

to measure the kinetic energy of

electrons Eh(k) = — Ev(k) + constant . With this convention the definition (4.5) for

the ...

This particle is called a positive

**hole**, or**hole**for short. It is convenient in practiceto measure the kinetic energy of

**holes**in opposite direction to that of theelectrons Eh(k) = — Ev(k) + constant . With this convention the definition (4.5) for

the ...

Page 234

For

Macfarlane et aZ.'s result suggests that m„ must increase by about 25 or 30 %.

This would be almost sufficient to bring the ft data and the temperature mobility

data ...

For

**holes**, there is even less positive information. If mn increases by ~5%,'Macfarlane et aZ.'s result suggests that m„ must increase by about 25 or 30 %.

This would be almost sufficient to bring the ft data and the temperature mobility

data ...

Page 251

Since the effective mass is a measure of the curvature of the energy surface in

energy- k space, it is seen that there will be two types of

warped energy surfaces described in eq. (1.16). These are known as light and ...

Since the effective mass is a measure of the curvature of the energy surface in

energy- k space, it is seen that there will be two types of

**holes**associated with thewarped energy surfaces described in eq. (1.16). These are known as light and ...

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absorption acceptor approximation assumed band edge band structure Brillouin zone calculated carrier centre charge Chem coefficient components compound concentration conduction band consider constant corresponding crystal curves cyclotron resonance degenerate density diffusion direct transition discussed donor doping effective mass electric field energy gap energy surfaces equation equilibrium example exciton experimental expression Faraday rotation foreign atoms free electron frequency germanium given hence holes imperfections impurity indium antimonide InSb interaction interband ionization ions Journ lattice levels linear liquid magnetic field matrix measurements melt mobility momentum obtained optical p-type phonon Phys potential pressure quantum range reciprocal lattice region samples scattering semiconductors shown in Fig spherical spin spin-orbit structure elements symmetry tensor theory thermodynamic thermodynamic potentials tion transverse valence band valley Voigt effect wave functions wave vector Zeeman effect zero zone