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Spin-density wave near the vortex cores in the high-temperature superconductor Bi$$_{2}$$Sr$$_{2}$$CaCu$$_{2}$$O$$_{8+y}$$

Mounce, A. M.*; Oh, S.*; Mukhopadhyay, S.*; Halperin, W. P.*; Reyes, A. P.*; Kuhns, P. L.*; Fujita, Kazuhiro*; Ishikado, Motoyuki; Uchida, Shinichi*

Competition with magnetism is at the heart of high-temperature superconductivity, most intensely felt near a vortex core. To investigate vortex magnetism we have developed a spatially resolved probe based upon NMR spin-lattice-relaxation spectroscopy. With this approach we have found a spin-density wave associated with the vortex core in Bi$$_{2}$$Sr$$_{2}$$CaCu$$_{2}$$O$$_{8+y}$$, similar to checkerboard patterns in the local density of electronic states reported from scanning tunneling microscope experiments. We have determined both the spin-modulation amplitude and decay length from the vortex core in fields up to $$H$$ = 30 T.



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Category:Physics, Multidisciplinary



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