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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2012

Evolution of a large-periodicity soliton lattice in a current-driven electronic crystal

Résumé

We report here on a detailed coherent x-ray diffraction study of the charge-density wave in K0.3MoO3 as a function of an external current. At threshold current, the charge-density wave undergoes a strong decrease of average amplitude keeping large correlation lengths. At the same time, an extra electronic modulation with large periodicity appears directly related to the sliding of the charge-density wave. This effect is interpreted as the formation of a soliton lattice and its evolution with respect to external current is investigated. The charge-density wave phase is found to undergo an anharmonic to harmonic transition when a current is injected.
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hal-00941993 , version 1 (04-02-2014)

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V.L.R. Jacques, D. Le Bolloc'H, S. Ravy, Jean Dumas, Claire Colin, et al.. Evolution of a large-periodicity soliton lattice in a current-driven electronic crystal. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2012, 85, pp.035113. ⟨10.1103/PhysRevB.85.035113⟩. ⟨hal-00941993⟩
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