2008/07/17 by J. Y. Gan, M. Mori, Michiyasu Mori +4
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.78.094504
published as Phys. Rev. B 78, 094504 (2008). · 6 pages, 4 figures
arxiv created 2008/07/17 · openalex publication_date 2008/09/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
A self-doped bilayer t\text\ensuremath-t^\ensuremath'\text\ensuremath-J model of an electron- and a hole-doped planes is studied by the slave-boson mean-field theory. In our model, a renormalized interlayer hopping connects the differently doped planes, which is generated by a site potential. We find coexistent phases of antiferromagnetic (AFM) and superconducting orders, although the magnitudes of order parameters become more dissimilar in the bilayer away from half-filling. Fermi surfaces (FS's) with the AFM order show two pockets around the nodal and the antinodal regions. These results can be interpreted as a coexistence of electron- and hole-doped Fermi pockets in the bilayer. In the nodal direction, the FS splitting is absent even in the bilayer system, since one band has a gap due to the AFM order.