High-temperature charge density wave correlations in La_1.875Ba_0.125CuO₄ without spin-charge locking.

ABSTRACT: Although all superconducting cuprates display charge-ordering tendencies, their low-temperature properties are distinct, impeding efforts to understand the phenomena within a single conceptual framework. While some systems exhibit stripes of charge and spin, with a locked periodicity, others host charge density waves (CDWs) without any obviously related spin order. Here we use resonant inelastic X-ray scattering to follow the evolution of charge correlations in the canonical stripe-ordered cuprate La_1.875Ba_0.125CuO₄ across its ordering transition. We find that high-temperature charge correlations are unlocked from the wavevector of the spin correlations, signaling analogies to CDW phases in various other cuprates. This indicates that stripe order at low tem

SUBMITTER: Miao H 

PROVIDER: S-EPMC5703287 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature