Charge Ordering Due to Magnetic Symmetry Breaking

Abstract

It is argued that both transitions observed in 50%-doped manganites, at the Néel temperature ($T_{\mathrm{N}}$) and the so-called charge ordering temperature ($T_{\mathrm{CO}}$), are magnetic. $T_{\mathrm{N}}$ corresponds to the order-disorder transition, which takes place between ferromagnetic zigzag chains, while the coherent motion of spins within the chains is destroyed only around $T_{\mathrm{CO}}$. The magnetic structure realized below $T_{\mathrm{CO}}$ is highly anisotropic. It is dressed by the lattice distortion and leads to huge anisotropy of the electronic structure, which explains stability of this state as well as the form of charge-orbital pattern above $T_{\mathrm{N}}$. The type of phase transition at $T_{\mathrm{N}}$ depends on lattice interactions.

4 pages, 3 figures

References in corpus (8)

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Cited by in corpus (10)

• Combining DFT and Many-Body Methods to Understand Correlated Materials
• Structural and magnetic properties of the single-layer manganese oxide La{1-x}Sr{1+x}MnO4
• Neutron scattering studies on stripe phases in non-cuprate materials
• Uniaxial pressure induced half-metallic ferromagnetic phase transition in LaMnO${}_3$
• Spectroscopy of orbital ordering in La0.5Sr1.5MnO4 : A many-body cluster calculation
• THz Field Control of In-Plane Orbital Order in La0.5Sr1.5MnO4
• Melting of magnetic correlations in charge-orbital ordered La(0.5)Sr(1.5)MnO(4) : competition of ferro and antiferromagnetic states
• Electronically smectic-like phase in a nearly half-doped manganite
• Charge Ordered Insulator without Magnetic Order Studied by Correlator Projection Method
• CE-antiferromagnetic electronic structure in LaSr${}_2$Mn${}_2$O${}_7$ revealed by micro-focused angle-resolved photoemission spectroscopy and tight-binding models