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

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Results 1-3 of 83

Page 47

Having so constructed a satisfactory single - particle model , we are finally in a

position to study many - body

two such

Having so constructed a satisfactory single - particle model , we are finally in a

position to study many - body

**effects**in magnetic metals . I have already indicatedtwo such

**effects**in these lectures — the vertex corrections to optical absorption ...Page 327

One finds that the exchange enhancement

cross - section at small energy loss for small angles . However , as soon as the

scattering angle is increased appreciably , the momentum transfers start to

become ...

One finds that the exchange enhancement

**effects**still show up as a peak in thecross - section at small energy loss for small angles . However , as soon as the

scattering angle is increased appreciably , the momentum transfers start to

become ...

Page 342

This is a particularly striking

ground state configuration np3 4S , should ... pure central field states neglects the

electron - electron interaction — the

configurations ...

This is a particularly striking

**effect**in the half filled p shell atoms where theground state configuration np3 4S , should ... pure central field states neglects the

electron - electron interaction — the

**effects**of which are to mix differentconfigurations ...

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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