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

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Page 17

The

reciprocal lattice . Let us now consider a specially simple case ; the longitudinal

linear spin density wave , S , = A cos Q•r . The submatrices S , and S - 1 are equal

, and ...

The

**perturbation**series also terminates if Q is rational with respect to thereciprocal lattice . Let us now consider a specially simple case ; the longitudinal

linear spin density wave , S , = A cos Q•r . The submatrices S , and S - 1 are equal

, and ...

Page 128

and below which

infinite classes of

, or by a direct nonperturbative treatment . 3 . – Abrikosov ' s procedure .

and below which

**perturbation**theory must be discarded , either by summation ofinfinite classes of

**perturbation**terms for T > T . and analytic continuation to T < T ., or by a direct nonperturbative treatment . 3 . – Abrikosov ' s procedure .

Page 208

In practice , however , they stopped with the lowest terms in the

series and therefore could discuss only the effect of 8 - d admixture near the limit

of large localized moment ( * ) . Under these circumstances it seems to be worth ...

In practice , however , they stopped with the lowest terms in the

**perturbation**series and therefore could discuss only the effect of 8 - d admixture near the limit

of large localized moment ( * ) . Under these circumstances it seems to be worth ...

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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