Orbital domain dynamics in a doped manganite

Orbital domain dynamics in a doped manganite

We explore a number of novel effects near the orbital-order phase transition in a half-doped manganite, Pr0.5Ca0.5MnO3. To probe the unusual short-range orbital order in this system, we have performed coherent soft x-ray resonant scattering measurements in a Bragg geometry to measure dynamics. Near the transition temperature, we observe a small fluctuating component in the scattered signal that...

Ferromagnetic domain structures and spin configurations measured in doped manganite

Response of acoustic phonons to charge and orbital order in the 50% doped bilayer manganite LaSr2Mn2O7.

We report an inelastic neutron scattering study of acoustic phonons in the charge and orbitally ordered bilayer manganite LaSr(2)Mn(2)O(7). For excitation energies less than 15 meV, we observe an abrupt increase (decrease) of the phonon energies (linewidths) of a transverse acoustic phonon branch at q = (h, h, 0), h ≤ 0.3, upon entering the low temperature charge and orbital ordered state (T(CO...

Strain-driven orbital and magnetic orders and phase separation in epitaxial half-doped manganite films

D. Pesquera, A. Barla, M. Wojcik, E. Jedryka, F. Bondino, E. Magnano, S. Nappini, D. Gutiérrez, G. Radaelli, G. Herranz, F. Sánchez and J. Fontcuberta 1 Institut de Ciència de Materials de Barcelona ICMAB-CSIC, Campus UAB, 08193 Bellaterra, Spain 2 Istituto di Struttura della Materia, ISM CNR, S.S. 14 km 163.5, Area Science Park Basovizza (Ts), Trieste I34149, Italy 3 Polish Academy of Science,...

Microstructure of bilayer manganite PrCa2Mn2O7 showing charge/orbital ordering

ordering Zhanbing He, He Tian, Guochu Deng, Qiang Xu, and Gustaaf Van Tendeloo Electron Microscopy for Materials Research (EMAT), University of Antwerp, Groenenborgerlaan 171, Antwerp B-2020, Belgium Laboratory for Developments and Methods, Paul Scherrer Institute, CH-5232 Villigen, Switzerland Bragg Institute, Australian Nuclear Science and Technology Organization, New Illawarra Road, Lucas He...