Robust charge stripe order under high electric fields in Nd1.67Sr0.33NiO4

Details Robust charge stripe order under high electric fields in Nd1.67Sr0.33NiO4 Robust charge stripe order under high electric fields in Nd1.67Sr0.33NiO4

2006-10-05

arxiv.org/abs/cond-mat/0610132v1

Phys. Rev. B 75, 041103(R) (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.75.041103

The influence of high electric fields on the charge stripe order in Nd1.67Sr0.33NiO4 was studied by means of simultaneous hard x-ray diffraction and electrical transport experiments. Direct measurements of the charge stripe satellite peaks in zero and high electric fields provide no evidence for a deformation or a sliding of the stripe lattice, which contradicts previous indications from non-linear conductance effects. By using the order parameter of a structural phase transition for instant sample temperature measurements, non-linear transport effects can be attributed to resistive heating. Implications for the pinning of stripes in the nickelates are discussed.

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