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

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Page 56

Now this formula is perfectly correct , in a certain

has a number of dubious features . One would think that it should represent a

limit for fixed E as R + 00 , but it does not ; if we fix E and I , at any given instant

either ...

Now this formula is perfectly correct , in a certain

**sense**, but in another**sense**ithas a number of dubious features . One would think that it should represent a

limit for fixed E as R + 00 , but it does not ; if we fix E and I , at any given instant

either ...

Page 88

In this

energy can be numerically large compared to the ferromagnetic - nonmagnetic

energy difference and is not easily calculated , good prediction of possible ...

In this

**sense**correlation is unfavourable to ferromagnetism . Since the correlationenergy can be numerically large compared to the ferromagnetic - nonmagnetic

energy difference and is not easily calculated , good prediction of possible ...

Page 169

where Y , is a Slater determinant of free conduction electron wavefunctions , Z , a

normalization constant and X , is a « localized » wavefunction in the

discussion following eq . ( 36 ) , then each such excited state is 28 + 1 - fold ...

where Y , is a Slater determinant of free conduction electron wavefunctions , Z , a

normalization constant and X , is a « localized » wavefunction in the

**sense**of thediscussion following eq . ( 36 ) , then each such excited state is 28 + 1 - fold ...

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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