Magnetism: From Stoner to Hubbard ( Alexander Lichtenstein )

Alexander Lichtenstein 

I. Institut fur Theoretische Physik ¨
Universitat Hamburg, 20355 Hamburg, Germany

Contents 

1 Introduction 2
2 From Stoner to Hubbard 2
3 From LDA to DMFT 3
4 Realistic DMFT scheme 10
5 Solution of quantum impurity problem 12
5.1 Hirsch-Fye quantum Monte Carlo . . . . . . . . . . . . . . . . . . . . . . . . 12
5.2 Continuous-time quantum Monte Carlo . . . . . . . . . . . . . . . . . . . . . 14
5.3 Fluctuation exchange approximation . . . . . . . . . . . . . . . . . . . . . . . 18
6 Effective magnetic interactions in LDA+DMFT 19
7 LDA+DMFT results for itinerant ferromagnetic metals 21
8 Conclusions

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http://cond-mat.de/events/correl13/manuscripts/lichtenstein.pdf