2001/06/30 by Takami Tohyama, T. Tohyama, Sadamichi Maekawa +1 · 3 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetism in coordination complexes #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.64.212505
published as Phys. Rev. B 64, 212505 (2001) (4 pages) · RevTeX, 5 pages, 4 figures, to appear in Phys. Rev. B Brief Reports
arxiv created 2001/10/26 · openalex publication_date 2001/11/12 · arxiv updated 2009/11/30 · openalex created_date 2019/07/30 · openalex updated_date 2026/07/28
We investigate the electronic states in the antiferromagnetic (AF) phase of electron-doped cuprates by using numerically exact diagonalization technique for a t\ensuremath-t^\ensuremath'\ensuremath-t^\ensuremath''\ensuremath-J model. When AF correlation develops with decreasing temperature, a gaplike behavior emerges in the optical conductivity. Simultaneously, the coherent motion of carriers due to the same sublattice hoppings is enhanced. We propose that the phase is characterized as an AF state with small Fermi surface around the momentum k=(\ensuremathπ,0) and (0,\ensuremathπ). This is a remarkable contrast to the behavior of hole-doped cuprates.