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

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Page 111

Physically the effect arises very simply ; as can be seen by

binding calculation . Take s - bands , then E ... downward by AE . But now

Hubbard ' s original truncation procedure is ambiguous , for

, < n ; ...

Physically the effect arises very simply ; as can be seen by

**considering**a tight -binding calculation . Take s - bands , then E ... downward by AE . But now

Hubbard ' s original truncation procedure is ambiguous , for

**consider**the term ET, < n ; ...

Page 252

Of course it is possible to

problem is how sensitive they are to the change in the surroundings , particularly

in the spin configurations . If the localized moment depends on the surroundings

...

Of course it is possible to

**consider**localized virtual states in these cases . Theproblem is how sensitive they are to the change in the surroundings , particularly

in the spin configurations . If the localized moment depends on the surroundings

...

Page 321

What we discuss is the properties of the extreme itinerant model with an eye to

sorting out differences from the localized model .

interacting limit . In this case one has for an electron gas with Hamiltonian * H = {

4 , 154 , + ...

What we discuss is the properties of the extreme itinerant model with an eye to

sorting out differences from the localized model .

**Consider**first the noninteracting limit . In this case one has for an electron gas with Hamiltonian * H = {

4 , 154 , + ...

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### Contents

LOMER Band theory and magnetism | 1 |

JACCARINO Studies of the hyperfine interaction in transi | 39 |

P W ANDERSON and W L MCMILLAN Multiplescattering | 50 |

Copyright | |

25 other sections not shown

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### Common terms and phrases

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