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

### From inside the book

Results 1-3 of 86

Page 137

The formal

+ + 2ridlex - H ) V | k ) , and therefore + < k ' \ k ) - = 8 ( k ' — k ) — 2ri8 ( Ex . — Ex

" < k ' | VKS + , or ( 21 ) Sxx = 8 ( k — k ' ) — 21id ( $ x Ex ' > < k ' | T | K ) , where ...

The formal

**solution**of ( 13a ) is TV | k ) + = | k ) + - H + in V | k ) , so that \ k ) = \ k )+ + 2ridlex - H ) V | k ) , and therefore + < k ' \ k ) - = 8 ( k ' — k ) — 2ri8 ( Ex . — Ex

" < k ' | VKS + , or ( 21 ) Sxx = 8 ( k — k ' ) — 21id ( $ x Ex ' > < k ' | T | K ) , where ...

Page 176

These « CDD ' s » will play an important role later on ( but in the k - plane rather

than the z - plane ) , when it will turn out that below a certain temperature the «

simple

axis ...

These « CDD ' s » will play an important role later on ( but in the k - plane rather

than the z - plane ) , when it will turn out that below a certain temperature the «

simple

**solution**» with A ; = 0 develops poles on the physical sheet , off the realaxis ...

Page 249

E n°1 / 2 . mo The self - consistent

into the following two categories : i ) There is only one

metal , a given value of E , and a given value of the exchange parameter U . In

this ...

E n°1 / 2 . mo The self - consistent

**solutions**for this problem may be classifiedinto the following two categories : i ) There is only one

**solution**for a given hostmetal , a given value of E , and a given value of the exchange parameter U . In

this ...

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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