1209.1934 (J. Gerit Brandenburg et al.)

Dimensionality of spin modulations in 1/8-doped lanthanum cuprates from
the perspective of NQR and muSR experiments    [PDF]

J. Gerit Brandenburg, Boris V. Fine

We investigate the dimensionality of inhomogeneous spin modulation patterns in the cuprate family of high-temperature superconductors with particular focus on 1/8-doped lanthanum cuprates. We compare one-dimensional stripe modulation pattern with two-dimensional checkerboard of spin vortices in the context of nuclear quadrupole resonance(NQR) and muon spin rotation(muSR) experiments. In addition, we also consider the third pattern, a two-dimensional superposition of spin spirals. Overall, we have found that none of the above patterns leads to a consistent interpretation of the two types of experiments considered. This, in particular, implies that the spin vortex checkerboard cannot be ruled out on the basis of available NQR/muSR experimental results.

View original: http://arxiv.org/abs/1209.1934