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Phonon and spin snapshots at temperatures T /TF M = 0.01, 0.5, 1.0, 1.5 and the corresponding spectral maps. The T are chosen to represent low, intermediate, 'critical', and high temperature regimes. First row: snapshot of the phonon field xi(t), showing the change from an undistorted low T state to a progressively large distortion checkerboard correlated state with temperature. Second row: snapshot of nearest-neighbour spin correlation: Oi(t) = 1 4 δ

Phonon and spin snapshots at temperatures T /TF M = 0.01, 0.5, 1.0, 1.5 and the corresponding spectral maps. The T are chosen to represent low, intermediate, 'critical', and high temperature regimes. First row: snapshot of the phonon field xi(t), showing the change from an undistorted low T state to a progressively large distortion checkerboard correlated state with temperature. Second row: snapshot of nearest-neighbour spin correlation: Oi(t) = 1 4 δ

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We solve for the finite temperature collective mode dynamics in the Holstein-double exchange problem, using coupled Langevin equations for the phonon and spin variables. We present results in a strongly anharmonic regime, close to a polaronic instability. For our parameter choice the system transits from an `undistorted' ferromagnetic metal at low...

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Context 1
... We organize the results in three parts: (a) T dependence of the typical instantaneous phonon and spin backgrounds and gross spectral features, (b) the phonon and magnon lineshape at a few momenta, and (c) comparison of our results with inelastic neutron data on the manganites. Fig.1 correlates the typical phonon and spin backgrounds, in the upper two rows, obtained as instantaneous Langevin configurations, with the momentum resolved power spectrum of the phonons and spins in the bottom two rows. ...
Context 2
... Having presented the results, in what follows we provide an analysis of the features in Figs.1-3, and point out where our results match with, differ from, and go beyond measurements in the manganites. ...
Context 3
... Fig.1, we show the behaviour of the spin structure factor S s (q) and the density structure factor S n (q) at q = (0, 0) and (π, π) respectively. ...
Context 4
... We organize the results in three parts: (a) T dependence of the typical instantaneous phonon and spin backgrounds and gross spectral features, (b) the phonon and magnon lineshape at a few momenta, and (c) comparison of our results with inelastic neutron data on the manganites. Fig.1 correlates the typical phonon and spin backgrounds, in the upper two rows, obtained as instantaneous Langevin configurations, with the momentum resolved power spectrum of the phonons and spins in the bottom two rows. ...
Context 5
... Having presented the results, in what follows we provide an analysis of the features in Figs.1-3, and point out where our results match with, differ from, and go beyond measurements in the manganites. ...
Context 6
... Fig.1, we show the behaviour of the spin structure factor S s (q) and the density structure factor S n (q) at q = (0, 0) and (π, π) respectively. ...

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