Quantum topological transitions and spinons in metallic ferro- and antiferromagnets
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TLDR
In this article, an effective Hamiltonian describing fluctuation effects in the magnetic phases of the Hubbard model in terms of spinon excitations is derived, and a comparison of spin-rotational Kotliar-Ruckenstein slave boson and Ribeiro-Wen dopon representations is performed.About:
This article is published in Physics Letters A.The article was published on 2019-04-24 and is currently open access. It has received 7 citations till now. The article focuses on the topics: Hubbard model & Slave boson.read more
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Exotic Lifshitz transitions in topological materials
TL;DR: Topological Lifshitz transitions involve many types of topological structures in momentum and frequency-momentum spaces: Fermi surfaces, Dirac lines and Weyl points as discussed by the authors.
Journal ArticleDOI
Electronic States and the Anomalous Hall Effect in Strongly Correlated Topological Systems
V. Yu. Irkhin,Yu. N. Skryabin +1 more
TL;DR: In this article, a two-band view of the spectrum in kagome lattices is proposed, including the transition from a ferromagnetic state, a flat strongly correlated band, and a band of light Dirac electrons.
Journal ArticleDOI
Magnetic States and Metal—Insulator in Strongly Correlated Systems (Scientific Summary)
TL;DR: In this article, the magnetic phase diagrams of the ground state have been considered within the t-t' Hubbard and s-d exchange models for the square and cubic lattices depending on the degree of band filling and the interaction parameter with allowance for collinear ferromagnetic, antiferromagnetic and incommensurate (helical) magnetic phases, as well as magnetic phase separation.
Journal ArticleDOI
Electronic States and Anomalous Hall Effect in Strongly Correlated Topological Systems
V. Yu. Irkhin,Yu. N. Skryabin +1 more
TL;DR: In this article, a two-band model of the spectrum in metallic kagome lattices is proposed, which involves a transition from the ferromagnetic state, a flat strongly correlated band, and a band of light Dirac electrons.
References
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Doping a Mott insulator: Physics of high-temperature superconductivity
TL;DR: In this paper, a review of the physics of high-temperature superconductors from the point of view of the doping of a Mott insulator is presented, with the goal of putting the resonating valence bond idea on a more formal footing.
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Doping a Mott Insulator: Physics of High Temperature Superconductivity
TL;DR: In this article, Anderson's idea of the resonating valence bond (RVB) was introduced to describe the spin liquid phase of the undoped Mott insulator, and the slave-boson is introduced to enforce the constraint of no double occupation.
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Half-metallic ferromagnets: From band structure to many-body effects
TL;DR: A review of new developments in theoretical and experimental electronic-structure investigations of half-metallic ferromagnets (HMFs) is presented in this article, where the effects of electron-magnon interaction in HMFs and their manifestations in magnetic, spectral, thermodynamic, and transport properties are considered.
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New functional integral approach to strongly correlated Fermi systems: The Gutzwiller approximation as a saddle point.
TL;DR: This approach uncovers the limitations of the Gutzwiller approximation and clarifies its connection to the "auxiliary-boson" mean- field theory of the Anderson model, leading to a novel strong-coupling mean-field theory which allows for a unified treatment of antiferromagnetism and ferromagnets, metal-to-insulator transition, and Kondo compensation effects.
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Weak magnetism and non-Fermi liquids near heavy-fermion critical points
TL;DR: In this article, the authors explore the hypothesis that the primary fluctuations responsible for the non-Fermi liquid physics are those associated with the destruction of the large Fermi surface of the Fermani liquid.