230 citations · 616 across the 13 of their papers we have counts for
13 papers
Damping and softening of transverse acoustic phonons in colossal magnetoresistive LaCaMnO and LaSrMnO
Joel S. Helton, Yang Zhao, Dmitry A. Shulyatev +1
Neutron spectroscopy is used to probe transverse acoustic phonons near the (2, 2, 0) Bragg position in colossal magnetoresistive La0.7Ca0.3MnO3 and La0.7Sr0.3MnO3. Upon warming to…
Spin wave damping arising from phase coexistence below in colossal magnetoresistive LaCaMnO
Joel S. Helton, Susumu K. Jones, Daniel Parshall +3
While the spin dynamics of LaCaMnO in the ferromagnetic phase are known to be unconventional, previous measurements have yielded contradictory results regarding…
Polaron-mediated spin correlations in metallic and insulating LaMnO (=Ca, Sr, or Ba)
Joel S. Helton, Daniel M. Pajerowski, Yiming Qiu +6
Neutron spectroscopy measurements reveal short-range spin correlations near and above the ferromagnetic-paramagnetic phase transition in manganite materials of the form La$_{1-x}A_…
Paramagnetic Spin Correlations in Colossal Magnetoresistive La0.7Ca0.3MnO3
Joel S. Helton, Matthew B. Stone, Dmitry A. Shulyatev +2
Neutron spectroscopy measurements reveal dynamic spin correlations throughout the Brillouin zone in the colossal magnetoresistive material La0.7Ca0.3MnO3 at 265 K (approximately 1.…
Quantized spin waves in the metallic state of magnetoresistive manganites
S. Petit, M. Hennion, F. Moussa +4
High resolution spin waves measurements have been carried out in ferromagnetic (F) La(1-x)(Sr,Ca)xMnO3 with x(Sr)=0.15, 0.175, 0.2, 0.3 and x(Ca)=0.3. In all q-directions, close to…
Intrinsic Nanoscale Inhomogeneities in Transition Metal Oxides
J. W. Lynn, D. N Argyriou, Y. Ren +3
Neutron elastic, inelastic and high energy x-ray scattering techniques are used to explore the nature of the polaron order and dynamics in La0.7Ca0.3MnO3. Static polaron correlatio…