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Effect of magnetic frustration on single-hole spectral function in the t-t'-t''-J model

Y. Shibata·T. Tohyama·S. Maekawa
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Abstract

We examine the effect of the magnetic frustration J' on the single-hole spectral function in the t-t'-t''-J model. At zero temperature, the exact diagonalization (ED) and the self-consistent Born approximation (SCBA) methods are used. We find that the frustration suppresses the quasiparticle (QP) weight at small momentum k, whereas the QP peak at k=(pi/2,pi/2) remains sharp. We also show the temperature dependence of the single-hole spectral function by using the ED method. It is found that the lineshapes at (pi/2,0) and (pi/2,pi/2) show different temperature dependence. These findings are consistent with the angle-resolved photoemission data on Sr2CuO2Cl2, and indicate the importance of the magnetic frustration on the electronic states of the insulating cuprates.

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Y. Shibata, T. Tohyama, S. Maekawa. 1998-11-05. Effect of magnetic frustration on single-hole spectral function in the t-t'-t''-J model. https://doi.org/10.1103/physrevb.59.1840

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