Field-induced hexagonal to square transition of the vortex lattice in overdoped La{1.8}Sr{0.2}CuO{4}

R. Gilardi; J. Mesot; A. J. Drew; U. Divakar; S. L. Lee; N. H. Andersen; J. Kohlbrecher; N. Momono; M. Oda

doi:10.1016/j.physc.2004.03.187

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Field-induced hexagonal to square transition of the vortex lattice in overdoped La{1.8}Sr{0.2}CuO{4}

R. Gilardi·J. Mesot·A. J. Drew·U. Divakar·S. L. Lee·N. H. Andersen·J. Kohlbrecher·N. Momono·M. Oda

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Abstract

We report on a small angle neutron scattering study of the vortex lattice in overdoped La{2-x}Sr{x}CuO{4} (x=0.2) up to high magnetic fields (9.5 Tesla) applied perpendicular to the CuO2 planes. At low magnetic fields we observe a crossover from hexagonal to square coordination of the vortex lattice. This field-induced transition confirms the results obtained in slightly overdoped La{2-x}Sr{x}CuO{4} (x=0.17).

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R. Gilardi, J. Mesot, A. J. Drew, U. Divakar, S. L. Lee, N. H. Andersen, J. Kohlbrecher, N. Momono, M. Oda. 2003-08-26. Field-induced hexagonal to square transition of the vortex lattice in overdoped La{1.8}Sr{0.2}CuO{4}. https://doi.org/10.1016/j.physc.2004.03.187

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