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Spin Dynamics of t-J Model on Triangular Lattice

Tao Li·Yong-Jin Jiang
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Abstract

We study the spin dynamics of t-J model on triangular lattice in the Slave-Boson-RPA scheme in light of the newly discovered superconductor Na$_{x}$CoO$_{2}$. We find resonant peak in the dynamic spin susceptibility in the $d+id^{^{\prime}}$-wave superconducting state for both hole and electron doping in large doping range. We find the geometrical frustration inherent of the triangular lattice provide us a unique opportunity to discriminate the SO(5) and RPA-like intepretation of the origin of the resonant peak.

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Tao Li, Yong-Jin Jiang. 2003-09-11. Spin Dynamics of t-J Model on Triangular Lattice. https://arxiv.org/abs/cond-mat/0309275

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