## Proceedings of the International School of Physics "Enrico Fermi.", Volume 37N. Zanichelli, 1967 - Nuclear physics |

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Page 2

It can further be shown that the domain of k can be limited to a unit cell of the

reciprocal lattice ; this unit cell is usually selected to be symmetrical about the

origin of reciprocal

given k ...

It can further be shown that the domain of k can be limited to a unit cell of the

reciprocal lattice ; this unit cell is usually selected to be symmetrical about the

origin of reciprocal

**space**and is then known as the first Brillouin zone . At anygiven k ...

Page 75

Radii squared are given by lower abscissa scale ; actual k -

upper . Arrows to left are theory at a mean radius . Circled points are degenerate .

Arrows on points on upper branch indicate direction of shift which would result

from ...

Radii squared are given by lower abscissa scale ; actual k -

**space**points byupper . Arrows to left are theory at a mean radius . Circled points are degenerate .

Arrows on points on upper branch indicate direction of shift which would result

from ...

Page 268

In reciprocal

occur at a Q ( along the c axis ) near to that for which ( 1 . 57 ) Q + R 12 ) = 2kp .

unnormalized e ( n ) This is the analogue of the real

1 .

In reciprocal

**space**YOSIDA and WATABE show that the screw structure willoccur at a Q ( along the c axis ) near to that for which ( 1 . 57 ) Q + R 12 ) = 2kp .

unnormalized e ( n ) This is the analogue of the real

**space**condition given after (1 .

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### Contents

LOMER Band theory and magnetism | 1 |

PHILLIPS Band theory of transition metals | 22 |

JACCARINO Studies of the hyperfine interaction in transi | 39 |

Copyright | |

19 other sections not shown

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### Common terms and phrases

alloys appearance approximation assume average band becomes bound boundary calculation charge complex computed condition conduction consider contribution correct correlation corresponding coupling curve defined density depends determined direction discussed effect electrons energy equation exchange existence expected expression fact factor Fermi Fermi level Fermi surface ferromagnetic field function given gives Hamiltonian host metal impurity atom increases integral interaction interesting lattice limit localized magnetic matrix elements means method moments normal Note observed obtained occur operator orbital perturbation phase Phys physical plane polarization poles positive possible potential present problem properties range relation replaced represent resonance scattering screening Sect shift shown similar simple single solution spin strong structure temperature theory tion transition metals usual wave wave functions write zero