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arXiv · 0908.3721

Nuclear Quadrupole Resonance Frequency in Multi-Layered Cuprates

M. Mori·N. Afzal Shooshtary·T. Tohyama·S. Maekawa
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Abstract

The 63Cu nuclear quadrupole resonance (NQR) frequency, nu_q, in the multi-layered cuprates is calculated in the cluster model by the exact diagonalization method. The charge imbalance between the outer CuO_2 plane (OP) with apical oxygen (OA) and the inner plane (IP) without OA in three-layered Tl2223 is estimated by comparing our results with the experimental nu_q. In Tl-based cuprates with more than three layers, we predict a large enhancement of the splitting of nu_q between OP and IP by taking into account the reduction of bond length between Cu and OA and a resulting enhancement of the charge transfer energy. Our results show that the NQR frequency is a useful quantity to estimate the charge imbalance in the multi-layered cuprates.

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M. Mori, N. Afzal Shooshtary, T. Tohyama, S. Maekawa. 2009-09-05. Nuclear Quadrupole Resonance Frequency in Multi-Layered Cuprates. https://doi.org/10.1143/jpsj.78.123704

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