Physics – Condensed Matter – Superconductivity
Scientific paper
2004-08-27
Phys. Rev. Lett. 94, 137003 (2005)
Physics
Condensed Matter
Superconductivity
4 pages including 4 figures
Scientific paper
10.1103/PhysRevLett.94.137003
We propose a mechanism for high critical temperature (T_c) in the coexistent phase of superconducting- (SC) and antiferromagnetic (AF) CuO_2 planes in multilayered cuprates. The Josephson coupling between the SC planes separated by an AF insulator (Mott insulator) is calculated perturbatively up to the fourth order in terms of the hopping integral between adjacent CuO_2 planes. It is shown that the AF exchange splitting in the AF plane suppresses the so-called pi-Josephson coupling, and the long-ranged 0-Josephson coupling leads to coexistence with a rather high value of T_c.
Maekawa Sasamichi
Mori Masao
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