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arXiv · 1507.04067

Lifshitz Transitions in Magnetic Phases of the Periodic Anderson Model

Katsunori Kubo
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Abstract

We investigate the reconstruction of a Fermi surface, which is called a Lifshitz transition, in magnetically ordered phases of the periodic Anderson model on a square lattice with a finite Coulomb interaction between f electrons. We apply the variational Monte Carlo method to the model by using the Gutzwiller wavefunctions for the paramagnetic, antiferromagnetic, ferromagnetic, and charge-density-wave states. We find that an antiferromagnetic phase is realized around half-filling and a ferromagnetic phase is realized when the system is far away from half-filling. In both magnetic phases, Lifshitz transitions take place. By analyzing the electronic states, we conclude that the Lifshitz transitions to large ordered-moment states can be regarded as itinerant-localized transitions of the f electrons.

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Katsunori Kubo. 2015-07-15. Lifshitz Transitions in Magnetic Phases of the Periodic Anderson Model. https://doi.org/10.7566/jpsj.84.094702

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