@article {Saadaoui2009AgPCCO,
	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},
	journal = {Physica B: Condensed Matter},
	volume = {404},
	number = {5{\textendash}7},
	year = {2009},
	note = {Proceedings of the Eleventh International Conference on Muon Spin Rotation, Relaxation and Resonance},
	pages = {727 - 729},
	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\&$\#$xa0;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 .},
	keywords = {Vortex state},
	issn = {0921-4526},
	doi = {http://dx.doi.org/10.1016/j.physb.2008.11.187},
	url = {http://www.sciencedirect.com/science/article/pii/S0921452608006546},
	author = {H. Saadaoui and W.A. MacFarlane and Z. Salman and G.D. Morris and K.H. Chow and I. Fan and P. Fournier and M.D. Hossain and T.A. Keeler and S.R. Kreitzman and C.D.P. Levy and A.I. Mansour and R.I. Miller and T.J. Parolin and M.R. Pearson and Q. Song and D. Wang and R.F. Kiefl}
}
@article {SaadaouiVortex2009,
	title = {Vortex lattice disorder in YBa$_2$Cu$_3$O$_{7-δ$ studied with $\beta$-NMR},
	journal = {Physica B: Condensed Matter},
	volume = {404},
	number = {5{\textendash}7},
	year = {2009},
	note = {Proceedings of the Eleventh International Conference on Muon Spin Rotation, Relaxation and Resonance},
	pages = {730 - 733},
	abstract = {In this paper, we report Li + 8 β -NMR measurements in thin Ag films deposited on the surface of \{YBa\} 2 Cu 3 O 7 - δ (YBCO) in the vortex state. The resonance in the Ag overlayer broadens dramatically below the superconducting transition temperature T c , as expected from the underlying vortex lattice in the YBCO. However, the lineshape is much broader and more symmetric than expected for an ideal vortex lattice. These results indicate the observed field distribution in the Ag overlayer is dominated by extrinsic, long length scale disorder.},
	keywords = {Vortex state},
	issn = {0921-4526},
	doi = {http://dx.doi.org/10.1016/j.physb.2008.11.229},
	url = {http://www.sciencedirect.com/science/article/pii/S0921452608006558},
	author = {H. Saadaoui and W.A. MacFarlane and G.D. Morris and Z. Salman and K.H. Chow and I. Fan and M.D. Hossain and R. Liang and A.I. Mansour and T.J. Parolin and M. Smadella and Q. Song and D. Wang and R.F. Kiefl}
}
