College Park, Maryland      June 6 - 10 , 2004

TP55: Magnetic-field induced transition to static long-range magnetic order in underdoped LSCO

B. Khaykovich (Massachusetts Institute of Technology), S. Wakimoto (University of Toronto), K. Yamada (Tohoku University), R. J. Birgeneau (University of Toronto), Y. S. Lee, M. A. Kastner (Massachusetts Institute of Technology), P. Vorderwisch, P. Smeibidl (Hahn-Meitner-Institut Berlin)

High-temperature cuprate superconductors often have dynamic and sometimes static magnetic order, which coexist with superconductivity. Underdoped La2-xSrxCuO4 has static magnetic order when x<0.14. At higher doping, the static magnetic order is destroyed and a spin-gap opens when it is optimally- or slightly over-doped. We present recent neutron scattering results, which show that applied magnetic field induces static magnetic order in La2-xSrxCuO4.

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