Balance and frustration in strongly correlated itinerant electron systems: an extension of Nagaoka's theorem
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DOI: 10.1103/physrevb.96.174435
Abstract: We prove that Nagaoka's theorem, that the ground state of the large-U Hubbard model with exactly one hole is ferromagnetic, holds for any balanced Hamiltonian. We argue that, in itinerant electron systems, a balanced Hamiltonian,… read more here.
Keywords: electron systems; balance frustration; itinerant electron; frustration strongly ... See more keywords
Itinerant-Electron Magnetism: The Importance of Many-Body Correlations.
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DOI: 10.1103/physrevlett.124.206404
Abstract: Do electrons become ferromagnetic just because of their repulsive Coulomb interaction? Our calculations on the three-dimensional electron gas imply that itinerant ferromagnetism of delocalized electrons without lattice and band structure, the most basic model considered… read more here.
Keywords: many body; itinerant electron; body correlations; electron magnetism ... See more keywords
Possible Itinerant-Electron Canted Antiferromagnetism in Tetragonal Antiperovskite Cr3AsN
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the Physical Society of Japan"
DOI: 10.7566/jpsj.86.104706
Abstract: We studied the magnetic, transport, and structural properties of the tetragonally distorted antiperovskite nitride Cr3AsN. A ferromagnetic-like increase in magnetic susceptibility below the magnetic transition temperature Tm = 255 K is reported for the first… read more here.
Keywords: possible itinerant; cr3asn; canted antiferromagnetism; itinerant electron ... See more keywords
Quantum Phase Transition in Itinerant-Electron Ferromagnet System U(Co1−xOsx)Al
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the Physical Society of Japan"
DOI: 10.7566/jpsj.87.094713
Abstract: We report the magnetic phase diagram of an itinerant-electron ferromagnetic system, U(Co1−xOsx)Al, derived from the AC susceptibility and DC magnetization. The quantum phase transition point at whi... read more here.
Keywords: phase; system co1; phase transition; itinerant electron ... See more keywords