La_2-xSr_xCuO₄

Value	Technique	Reference	Comments
Penetration depth (λ)
λa = ~ 340±5 nm (for La1.85Sr0.15CuO4, Tc = 28 K, T = 4.2 K)	scanning Hall probe	Chang et al, APL 61, 1974 (1992)	Imaged 4 vortices, fit several different ways.
Coherence length (ξ)