Spin Dynamics for the t-J Model

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 $Q=(\pi ,\pi )$ are separated as low- and high-frequency parts, respectively, but the high-frequency part is suppressed in the dynamical susceptibility spectrum ${\chi }^{{}^{\prime \prime }}(Q,\omega )$, while the low-frequency part is the temperature dependent, which are in qualitative agreement with the experiments and numerical simulations.

3 pages, three figures are added

References in corpus (2)

• Theory of Photoemission from the Copper Oxide Material
• Charge Dynamics from Copper Oxide Materials

Cited by in corpus (3)

• Anomalous c-axis charge dynamics in copper oxide materials
• Influence of the additional second neighbor hopping on the spin response in the t-J model
• Dynamical spin response of electron doped Mott insulators on a triangular lattice