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

### From inside the book

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Page 3

If an approximate form of the exchange interaction is introduced , we must

examine carefully the role of the self - term , and the correctenss of identifying the

energy

itself is ...

If an approximate form of the exchange interaction is introduced , we must

examine carefully the role of the self - term , and the correctenss of identifying the

energy

**parameter**with the thermodynamic potential . The Hartree - Fock formitself is ...

Page 418

If we choose the band width

contains two

electrons per atom n . In an insulating magnetic material there is only one

If we choose the band width

**parameter**B as our unit of energy , the modelcontains two

**parameters**: the interaction strenght , C . / B and the number ofelectrons per atom n . In an insulating magnetic material there is only one

**parameter**, the ...Page 431

( 76 ) , to find the range of values of the

stable , and then solve ( 78 ) for a few values of the

for various Q to find the Q minimizing ( 82 ) . 4 ' 3 Electron - electron interaction

and ...

( 76 ) , to find the range of values of the

**parameters**of v , for which the SDW isstable , and then solve ( 78 ) for a few values of the

**parameters**in that range andfor various Q to find the Q minimizing ( 82 ) . 4 ' 3 Electron - electron interaction

and ...

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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