Scanning Hall Probe Imaging of ErNi2B2C

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We report scanning Hall probe imaging of ErNi{sub 2}B{sub 2}C in the superconducting, antiferromagnetic, and weakly ferromagnetic regimes in magnetic fields up to 20 Oe, well below H{sub c1}, with two results. First, imaging isolated vortices shows that they spontaneously rearrange on cooling through the antiferromagnetic transition temperature T{sub N} = 6 K to pin on twin boundaries, forming a striped pattern. Second, a weak, random magnetic signal appears in the ferromagnetic phase below T{sub WFM} = 2.3 K, and no spontaneous vortex lattice is present down to 1.9 K. We conclude that ferromagnetism coexists with superconductivity either by forming ... continued below

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8 pages

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Bluhm, Hendrik; Sebastian, Suchitra; Guikema, Janice W.; Fisher, I.R.; Moler, Kathryn A. & /Stanford U., Appl. Phys. Dept. December 2, 2005.

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We report scanning Hall probe imaging of ErNi{sub 2}B{sub 2}C in the superconducting, antiferromagnetic, and weakly ferromagnetic regimes in magnetic fields up to 20 Oe, well below H{sub c1}, with two results. First, imaging isolated vortices shows that they spontaneously rearrange on cooling through the antiferromagnetic transition temperature T{sub N} = 6 K to pin on twin boundaries, forming a striped pattern. Second, a weak, random magnetic signal appears in the ferromagnetic phase below T{sub WFM} = 2.3 K, and no spontaneous vortex lattice is present down to 1.9 K. We conclude that ferromagnetism coexists with superconductivity either by forming small ferromagnetic domains or with oscillatory variation of the magnetization on sub-penetration depth length scales.

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8 pages

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  • Journal Name: Physical Review B

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  • Report No.: SLAC-PUB-11576
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 877526
  • Archival Resource Key: ark:/67531/metadc878315

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Office of Scientific & Technical Information Technical Reports

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  • December 2, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 7, 2016, 8:50 p.m.

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Bluhm, Hendrik; Sebastian, Suchitra; Guikema, Janice W.; Fisher, I.R.; Moler, Kathryn A. & /Stanford U., Appl. Phys. Dept. Scanning Hall Probe Imaging of ErNi2B2C, article, December 2, 2005; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc878315/: accessed April 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.