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

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

2003-08-26

arxiv.org/abs/cond-mat/0308533v1

Physica C 408-410 (2004) 491

Physics

Condensed Matter

3 pages, 2 figures. to appear in Physica C (proceedings for the M2S-HTSC-VII Conference, May 25-30, Rio de Janeiro)

Scientific paper

10.1016/j.physc.2004.03.187

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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