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$\beta$-NMR investigation of the vortex lattice near the interface of silver and Pr$_1.85$Ce$_0.15$Cu$O$_{4-δ$ thin films

Title$\beta$-NMR investigation of the vortex lattice near the interface of silver and Pr$_1.85$Ce$_0.15$Cu$O$_{4-δ$ thin films
Publication TypeJournal Article
Year of Publication2009
AuthorsSaadaoui, H, MacFarlane, WA, Salman, Z, Morris, GD, Chow, KH, Fan, I, Fournier, P, Hossain, MD, Keeler, TA, Kreitzman, SR, Levy, CDP, Mansour, AI, Miller, RI, Parolin, TJ, Pearson, MR, Song, Q, Wang, D, Kiefl, RF
JournalPhysica B: Condensed Matter
Volume404
Pagination727 - 729
ISSN0921-4526
KeywordsVortex state
Abstract

In this paper, we report observation of the vortex lattice above the surface of high-temperature superconductors Pr 2 - x Ce x CuO 4 - δ using beta-detected \{NMR\} ( β -NMR) of Li + 8 implanted in a 40 nm thick Ag overlayer. The resonance in Ag broadens dramatically below the transition temperature T c as expected from the vortex lattice in the underlying superconductor. However, the lineshape is nearly symmetric with the absence of a high-field tail and exhibits a slight positive shift of the average field below T c .

URLhttp://www.sciencedirect.com/science/article/pii/S0921452608006546
DOI10.1016/j.physb.2008.11.187