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Dirty Peierls transitions in alpha-Uranium

Autor: Cox, S., Rosten, E., McDonald, R. D., Singleton, J.

We point out that a recent model for the heat capacity of alpha-U that invokes CDW collective modes is unphysical. We show instead that the features in the heat capacity of both single-crystal and polycrystalline alpha-U can be accounted for by a num

Externí odkaz: http://arxiv.org/abs/cond-mat/0611331

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Dirty Peierls transition to stripe phase in manganites

Autor: Cox, S., Lashley, J. C., Rosten, E., Singleton, J., Williams, A. J., Littlewood, P. B.

The nature of the phase transitions in La$_{1-x}$Ca$_x$MnO$_3$ and Pr$_{0.48}$Ca$_{0.52}$MnO$_3$ has been probed using heat capacity and magnetisation measurements. The phase transition associated with the onset of the stripe phase has been identifie

Externí odkaz: http://arxiv.org/abs/cond-mat/0610276

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Strain control of superlattice implies weak charge-lattice coupling in La$_{0.5}$Ca$_{0.5}$MnO$_3$

Autor: Cox, S., Rosten, E., Chapman, J. C., Kos, S., Calderón, M. J., Kang, D. J., Littlewood, P. B., Midgley, P. A., Mathur, N. D.

We have recently argued that manganites do not possess stripes of charge order, implying that the electron-lattice coupling is weak [Phys Rev Lett \textbf{94} (2005) 097202]. Here we independently argue the same conclusion based on transmission elect

Externí odkaz: http://arxiv.org/abs/cond-mat/0504476

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