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

### From inside the book

Results 1-3 of 93

Page 88

these is the exclusion principle which , by keeping like - spin electrons apart ,

leads to spin - dependent terms in the

second effect concerns unlike spins which stay apart from each other because

their wave ...

these is the exclusion principle which , by keeping like - spin electrons apart ,

leads to spin - dependent terms in the

**energy**— the exchange terms . Thesecond effect concerns unlike spins which stay apart from each other because

their wave ...

Page 93

In this case ferromagnetism is possible due to either the « free - electron - gas -

like » exchange

electrons on the same atom , or a combination of both . To determine the ...

In this case ferromagnetism is possible due to either the « free - electron - gas -

like » exchange

**energy**being sufficiently large , or to Hund ' s rule alignment ofelectrons on the same atom , or a combination of both . To determine the ...

Page 94

This will certainly happen if the band

procedure used here is quite satisfactory . For the determinantal wave function ...

This will certainly happen if the band

**energy**is small compared to the polarity**energy**. On the other hand , if the minimum is close to the H - F minimum than theprocedure used here is quite satisfactory . For the determinantal wave function ...

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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