title: Spin-density wave near the vortex cores in the high-temperature superconductor Bi2Sr2CaCu2O8+y.
abstract: 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.
authors.affiliation: Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA.
authors.forename: A M
authors.initials: AM
authors.lastname: Mounce
authors.forename: S
authors.initials: S
authors.lastname: Oh
authors.forename: S
authors.initials: S
authors.lastname: Mukhopadhyay
authors.forename: W P
authors.initials: WP
authors.lastname: Halperin
authors.forename: A P
authors.initials: AP
authors.lastname: Reyes
authors.forename: P L
authors.initials: PL
authors.lastname: Kuhns
authors.forename: K
authors.initials: K
authors.lastname: Fujita
authors.forename: M
authors.initials: M
authors.lastname: Ishikado
authors.forename: S
authors.initials: S
authors.lastname: Uchida