2009/02/06 by Krzysztof Byczuk, Michael Sekania, Walter Hofstetter +2 · 40 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Charge (physics) #Charge ordering #Condensed matter physics #Electrical resistivity and conductivity #Electron #Hubbard model #Ion #Ionic bonding #Magnetic and transport properties of perovskites and related materials #Materials science #Metal–insulator transition #Mott insulator #Paramagnetism #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Strongly correlated material #Superconductivity #Thermodynamics #Variable-range hopping #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.79.121103
published in Physical Review B 79(12) (American Physical Society) · 4 pages, 4 figures
arxiv created 2009/02/06 · openalex publication_date 2009/03/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Paramagnetic solutions of the ionic Hubbard model at half-filling in dimensions D>2 indicate that the band and the Mott insulator phases are separated by a metallic phase. We present zero-temperature dynamical mean-field theory solutions, which include antiferromagnetic long-range order and show that the one-particle spectral functions always possess an energy gap, and therefore the system is insulating for all interaction strengths. The staggered charge-density modulation coexists with antiferromagnetic long-range order of N'eel type.