From chessboard of bipolarons of size 4a in cubic $$\hbox {La}_{7/8}\hbox {Sr}_{1/8}\hbox {MnO}_3$$ to stripes of the same bipolarons in layered high $$T_c$$ cuprates
The compound [Formula: see text] exhibits a charge order (CO) state at [Formula: see text] and [Formula: see text], which recalls the CO state with a decrease in the temperature of the superconducting transition, [Formula: see text], observed in all cuprates at this doping value. Local excitations of lattice and magnetic origins measured in the two-dimensional metallic state of [Formula: see text] reveal the existence of bipolarons of size 4a resulting from structural and antiferromagnetic pairings of hole-rich orbital polarons of size 2a. They are intertwined with hole-poor domains in a disordered state at [Formula: see text] which become ordered on a chessboard organized in a 3D-order state of ferromagnetically paired polarons at [Formula: see text]. Applied to the [Formula: see text] planes of the cuprates of the "214" family, this model produces stripes of bipolarons intertwined with stripes of antiferromagnetically arranged spins, hole-poor, both of size 4a, leading to a spin density wave with a wave vector [Formula: see text], a charge density wave with [Formula: see text], the Yamada laws [Formula: see text] and [Formula: see text] and a decrease of [Formula: see text] at x=1/8. This work invokes relevance of a bipolaronic origin of high [Formula: see text] superconductivity, in which bipolarons of size 4a can play a major role.
Authors
- Claudine Lacroix
- B. Hennion
- M. Hennion
- Alexandre Ivanov
Institutions
- Centre National de la Recherche Scientifique (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Université Paris-Saclay (FR)
- Institut Laue-Langevin (FR)
- Laboratoire Léon Brillouin (FR)
- CEA Paris-Saclay (FR)
- Institut Néel (FR)
Publication Details
- Journal
- Scientific Reports
- Published
- 2026-01-13
- DOI
- https://doi.org/10.1038/s41598-025-29053-8
- Primary Topic
- Magnetic and transport properties of perovskites and related materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00