Interpretation of low-temperature nuclear quadrupole resonance spectra in La(1.875)Ba(0.125)CuO(4) in terms of two-dimensional spin superstructure

TL;DR

This paper reinterprets low-temperature NQR spectra in La(1.875)Ba(0.125)CuO(4) to support a two-dimensional spin superstructure, providing insights into the spin and charge patterns in high-temperature cuprate superconductors.

Contribution

It offers a new analysis of NQR data indicating a two-dimensional 'grid' spin pattern, advancing understanding of spin modulations in cuprate superconductors.

Findings

NQR spectra favor a 2D 'grid' spin pattern

Discussion of charge patterns accompanying spin modulations

Supports 2D spin superstructure in cuprates

Abstract

This paper reanalyzes the low temperature nuclear quadrupole resonance (NQR) experiments in La(1.875)Ba(0.125)CuO(4) by Hunt et al. [Phys. Rev. B 64, 134565 (2001)] in an attempt to determine the dimensionality of spin modulations in this and other compounds of the lanthanum family of high temperature cuprate superconductors. It is concluded that the shape of the NQR spectra obtained by Hunt et al. favors the two-dimensional pattern of spin modulations known as "grid" or "checkerboard". The paper also contains the discussion of charge patterns, which can accompany the above spin modulation.