Cooperative Jahn-Teller transition and resonant x-ray scattering in thin film $\mathrm{LaMn}{\mathrm{O}}_3$

Abstract

Epitaxial thin films of stoichiometric $\mathrm{LaMn}{\mathrm{O}}_3$ were grown on $\mathrm{SrTi}{\mathrm{O}}_3(110)$ substrates using the pulsed laser deposition technique. From the high resolution x-ray diffraction measurements, the lattice parameters were determined as a function of temperature and the cooperative Jahn-Teller transition was found to occur at $T_{JT}$=573.0 K. Also measured was resonant x-ray scattering intensity of the orthorhombic (100) peak of $\mathrm{LaMn}{\mathrm{O}}_3$ near the Mn K edge from low temperatures to above $T_{JT}$. We demonstrate that the integrated intensity of the (100) peak is proportional to the 3/2 power of the orthorhombic strain at all temperatures, and thus provide an experimental evidence that the resonant scattering near the Mn K edge in $\mathrm{LaMn}{\mathrm{O}}_3$ is largely due to the Jahn-Teller effect.

13 pages, 4 figures

References in corpus (4)

• On charge and orbital ordering in La0.5Sr1.5MnO4
• Spin, charge and orbital ordering in La0.5Sr1.5MnO4
• Ab initio calculation of resonant X-ray scattering in Manganites
• A Resonant X-ray Scattering Study of Octahedral Tilt Ordering in LaMnO${}_3$ and Pr${}_{1-x}$Ca${}_x$MnO${}_3$

Cited by in corpus (5)

• Orbital ordering and enhanced magnetic frustration of strained BiMnO3 thin films
• Magnetic and Orbital Order in LaMnO${}_3$ under Uniaxial Strain: A Model Study
• Particle-size dependence of orbital order-disorder transition in LaMnO3
• Local atomic and electronic structure in LaMnO_3 across the orbital ordering transition
• ESR evidence for partial melting of the orbital order in LaMnO${}_3$ below the Jahn-Teller transition