Stripes Disorder and Correlation lengths in doped antiferromagnets

Abstract

For stripes in doped antiferromagnets, we find that the ratio of spin and charge correlation lenghts, ${\xi }_s/{\xi }_c$, provide a sharp criterion for determining the dominant form of disorder in the system. If stripes disorder is controlled by topological defects then ${\xi }_s/{\xi }_c\lesssim 1$. In contast, if stripes correlations are disordered primarily by non-topological elastic deformations (i.e., a Bragg-Glass type of disorder) then $1<{\xi }_s/{\xi }_c\lesssim 4$ is expected. Therefore, the observation of ${\xi }_s/{\xi }_c\approx 4$ in $(LaNd{)}_{2-x}S{r}_{x}Cu{O}_4$ and ${\xi }_s/{\xi }_c\approx 3$ in $L{a}_{2/3}S{r}_{1/3}Ni{O}_4$ invariably implies that the stripes are in a Bragg glass type state, and topological defects are much less relevant than commonly assumed. Expected spectral properties are discussed. Thus, we establish the basis for any theoretical analysis of the experimentally obsereved glassy state in these material.

4 pages, 2 figures

References in corpus (3)

• Glassy nature of stripe ordering in La(1.6-x)Nd(0.4)Sr(x)CuO(4)
• Inhomogeneous Low Frequency Spin Dynamics in La_{1.65}Eu_{0.2}Sr_{0.15}CuO_4
• Magnetism of Stripe-Ordered La_(5/3)Sr_(1/3)NiO_4

Cited by in corpus (12)

• How to detect fluctuating order in the high-temperature superconductors
• Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
• Stripe order, depinning, and fluctuations in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$ and La${}_{1.875}$Ba${}_{0.075}$Sr${}_{0.050}$CuO${}_4$
• Evidence for unusual superconducting correlations coexisting with stripe order in La(1.875)Ba(0.125)CuO(4)
• High-temperature charge density wave correlations in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$ without spin-charge locking
• Thermodynamics of the interplay between magnetism and high-temperature superconductivity
• Incommensurate phonon anomaly and the nature of charge density waves in cuprates
• Relationship between charge stripe order and structural phase transitions in La${}_{1.875}$Ba${}_{0.125-x}$Sr${}_x$CuO${}_4$
• First time determination of the microscopic structure of a stripe phase: Low temperature NMR in La2NiO4.17
• Pinning of stripes in cuprate superconductors
• The Temperature Evolution of the Out-of-Plane Correlation Lengths of Charge-Stripe Ordered La(1.725)Sr(0.275)NiO(4)
• Stability of charge-stripe ordered La2-xSrxNiO4+delta at one third doping