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

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Page 121

absolute zero and with impurity spin } a singlet bound state is formed for

antiferromagnetic

of diagonalizing the Hamiltonian within the restricted manifold of states obtained

by ...

absolute zero and with impurity spin } a singlet bound state is formed for

antiferromagnetic

**coupling**. This bound state is obtained by the obvious methodof diagonalizing the Hamiltonian within the restricted manifold of states obtained

by ...

Page 203

( 120 ) 1 Ã Ex - E = 0 ; V Ex . - E = 0 , slet it ; L . - € , exp [ - 4 / | Jot or ferromagnetic

state is lowest : EN - E , exp [ - 4 / Jle ] and for antiferromagnetic

singlet ...

( 120 ) 1 Ã Ex - E = 0 ; V Ex . - E = 0 , slet it ; L . - € , exp [ - 4 / | Jot or ferromagnetic

**coupling**, for singlet and triplet states . For ferromagnetic**coupling**, the tripletstate is lowest : EN - E , exp [ - 4 / Jle ] and for antiferromagnetic

**coupling**thesinglet ...

Page 204

Although it is known that the analogous trial state in the case of an ordinary

potential gives the wrong answer for E , , whose exact form is analytic in the

fact Yoshida ...

Although it is known that the analogous trial state in the case of an ordinary

potential gives the wrong answer for E , , whose exact form is analytic in the

**coupling**strength [ 31 ] , it may nevertheless be correct in the present case . Infact Yoshida ...

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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