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Spin Dynamics for the t-J Model

Zhongbing Huang·Shiping Feng
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Abstract

The spin dynamics at the finite temperature for the t-J model in the underdoped and optimal doped regimes is studied within the fermion-spin theory. It is shown that the dynamical spin structure factor spectrum at the antiferromagnetic wave vector $Q=(π,π)$ are separated as low- and high-frequency parts, respectively, but the high-frequency part is suppressed in the dynamical susceptibility spectrum $χ^{''}(Q,ω)$, while the low-frequency part is the temperature dependent, which are in qualitative agreement with the experiments and numerical simulations.

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Zhongbing Huang, Shiping Feng. 2003-11-07. Spin Dynamics for the t-J Model. https://doi.org/10.1016/s0375-9601(98)00195-9

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