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

### From inside the book

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Page 119

even if direct exchange coupling to the conduction electrons is neglected , there

will be an effective exchange coupling in second order via the s - d

and it will be of antiferromagnetic sign . This immediately brings up the question ...

even if direct exchange coupling to the conduction electrons is neglected , there

will be an effective exchange coupling in second order via the s - d

**scattering**,and it will be of antiferromagnetic sign . This immediately brings up the question ...

Page 131

In the next few lectures , in which I will reappear as a

se that it is precisely the interplay of so ) and I ' 1 ) , satisfying coupled integral

equations , which prevents the appearance of complex poles . Or , more

accurately ...

In the next few lectures , in which I will reappear as a

**scattering**matrix , we shallse that it is precisely the interplay of so ) and I ' 1 ) , satisfying coupled integral

equations , which prevents the appearance of complex poles . Or , more

accurately ...

Page 327

This gives a set of curves in the q - w plane along which the neutron

takes place ( sketched in Fig . 6 ) . Thus considering a surface defined by the

neutron

this ...

This gives a set of curves in the q - w plane along which the neutron

**scattering**takes place ( sketched in Fig . 6 ) . Thus considering a surface defined by the

neutron

**scattering**, Im Xa ( w ) , the neutrons at fixed angle cut a cross - section ofthis ...

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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