Weak charge-lattice coupling requires reinterpretation of stripes of charge order in La1-xCaxMnO3

Abstract

Modulations in manganites attributed to stripes of charge/orbital/spin order are thought to result from strong electron-lattice interactions that lock the superlattice and parent lattice periodicities. Surprisingly in La1-xCaxMnO3(x>0.5, 90 K), convergent beam (3.6 nm spot) electron diffraction patterns rule out charge stacking faults and indicate a superlattice with uniform periodicity. Moreover, large area electron diffraction peaks are sharper than simulations with stacking faults. Since the electron-lattice coupling does not lock the two periodicities (to yield stripes) it may be too weak to strongly localise charge.

Analysis and interpretation are improved and presented better

Cited by in corpus (23)

• Sliding charge density wave in manganites
• New phase transition in $P{r}_{1-x}C{a}_{x}Mn{O}_3$ system: evidence for electrical polarization in charge ordered manganites
• Local atomic structure and discommensurations in the charge density wave of CeTe3
• Observation of charge-density-wave excitations in manganites
• Hall effect measurements on epitaxial SmNiO3 thin films and implications for antiferromagnetism
• On the electronic structure of the charge-ordered phase in epitaxial and polycrystalline La1-xCaxMnO3 (x = 0.55, 0.67) perovskite manganites
• The Feshbach resonance and nanoscale phase separation in a polaron liquid near the quantum critical point for a polaron Wigner crystal
• Lattice-form dependent orbital shape and charge disproportionation in charge- and orbital-ordered manganites
• Disorder-Induced First Order Transition and Curie Temperature Lowering in Ferromagnatic Manganites
• Jahn-Teller distortion induced charge-ordering in CE phase of manganites
• Chromium at High Pressures: Weak Coupling and Strong Fluctuations in an Itinerant Antiferromagnet
• Direct imaging of lattice strain-induced stripe phases in an optimally-doped manganite
• Instabilities and Insulator-Metal transitions in Half-Doped Manganites induced by Magnetic-Field and Doping
• Ground state in a half-doped manganite distinguished by neutron spectroscopy
• Spin-density, charge- and bond-disproportionation wave instability in hole-doped infinite-layer $R$NiO${}_2$
• High resolution determination of ferromagnetic metallic limit in epitaxial La1-xCaxMnO3 films on NdGaO3
• Electronic self-organization in the single-layer manganite $\mathrm{P}{\mathrm{r}}_{1-x}\mathrm{C}{\mathrm{a}}_{1+x}\mathrm{Mn}{\mathrm{O}}_4$
• Atomic-scale tracking of topological defect motion and incommensurate charge order melting
• Limited local electron-lattice coupling in manganites
• Oxygen deficiency induced suppression of JT-distortion and stabilization of chargeordering in La0.2Sr0.8MnO3-d
• Pressure-temperature phase diagram of charge ordering in Nd1/2Sr1/2MnO3
• Electronic correlations and spin-charge-density stripes in double-layer La${}_3$Ni${}_2$O${}_7$
• Inhomogeneous Phases in a Double-Exchange Magnet with Long Range Coulomb Interactions