Single-particle properties of the Hubbard model in a novel three-pole approximation
نویسندگان
چکیده
منابع مشابه
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A new two-pole approximation in the Hubbard model. Two-pole approaches in the Hubbard model [1] and the Hubbard bands conception (being the consequence of a two-pole approximation) have been useful for understanding of the peculiarities of electric and magnetic properties of narrow-band materials [1]-[13]. However within the framework of two-pole approaches there are series of issues, in partic...
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We present magnetic properties of the three-band Hubbard model in the paraand antiferromagnetic phase on a hypercubic lattice calculated with the Dynamical Mean-Field Theory (DMFT). To allow for solutions with broken spin-symmetry we extended the approach to lattices with AB-like structure. Above a critical sublattice magnetization md ≈ 0.5 one can observe rich structures in the spectral-functi...
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ژورنال
عنوان ژورنال: Physica B: Condensed Matter
سال: 2018
ISSN: 0921-4526
DOI: 10.1016/j.physb.2017.09.051