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Published on: March 24, 2019
Spin-density wave near the vortex cores in the high-temperature superconductor Bi2Sr2CaCu2O8+y
A M Mounce1, S Oh, S Mukhopadhyay
1Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA.
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.
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