ARPES, Neutrons, and the High-$T_c$ Mechanism

Details ARPES, Neutrons, and the High-$T_c$ Mechanism ARPES, Neutrons, and the High-$T_c$ Mechanism

2008-04-02

arxiv.org/abs/0804.0356v2

Phys. Rev. B 78, 174506 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 4 figures, 1 table, submitted. The content is largely expanded

Scientific paper

10.1103/PhysRevB.78.174506

Extensive ARPES and low-energy inelastic neutron scattering studies of cuprate superconductors can be successfully described using a weak-coupling theory in which quasiparticles on a square lattice interact via scalar and spin-dependent effective interactions. In this article we point out that in Bi$_2$Sr$_2$Ca$_{1-x}$Y$_x$Cu$_2$O$_8$ (Bi2212) both probes are consistent with dominant near-neighbour Heisenberg interactions. We discuss the implications of this finding for the mechanism of high-$T_c$ superconductivity.

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