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

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M. Oda

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classification ❄️ cond-mat

keywords latticeoverdopedvortexfield-inducedfieldshexagonalmagneticsquare

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

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