Universal Spin Response in Copper Oxide Materials

Details Universal Spin Response in Copper Oxide Materials Universal Spin Response in Copper Oxide Materials

1998-03-20

arxiv.org/abs/cond-mat/9803246v2

Phys. Rev. B57, 10328 (1998)

Physics

Condensed Matter

4 pages, four figures are added

Scientific paper

10.1103/PhysRevB.57.10328

The spin response in the copper oxide materials at finite temperatures in the underdoped and optimal doped regimes is studied within the framework of the fermion-spin theory. The integrated dynamical spin structure factor is almost temperature independent, the integrated susceptibility shows the particularly universal behavior as $I(\omega, T) \propto arctan [ a_{1}\omega/T + a_{3}(\omega/T)^{3}]$, and the spin-lattice relaxation time is weakly temperature dependent, which are consistent with experiments and numerical simulations.

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