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

### From inside the book

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Page 103

... alloy analogy holds ; there are two types of atom with energy levels at T , and T

, + 1 . The bandwidth

the proportion of THEORY OF CORRELATIONS IN TRANSITION METALS 103.

... alloy analogy holds ; there are two types of atom with energy levels at T , and T

, + 1 . The bandwidth

**depends**on the frequency of hopping and this**depends**onthe proportion of THEORY OF CORRELATIONS IN TRANSITION METALS 103.

Page 109

This branch cut in the energy shift implies a finite quasi - particle lifetime which is

just what the general discussion predicted . To see this one has only to look at

the expression for the density of states , which

is ) ...

This branch cut in the energy shift implies a finite quasi - particle lifetime which is

just what the general discussion predicted . To see this one has only to look at

the expression for the density of states , which

**depends**on G ( E + iε ) — G ( E —is ) ...

Page 257

all

Within the localized model there are two contributions : a direct Coulomb overlap

between s and f which

all

**depend**on the coupling of the f - states to electrons in the conduction band .Within the localized model there are two contributions : a direct Coulomb overlap

between s and f which

**depends**on the anisotropy of the f - state charge ...### What people are saying - Write a review

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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