Figure 4

The WL effect in MR measurements of single-crystal LSMO ultrathin films.
(a) The ΔG versus magnetic field curve at 2 K. The solid curve is fitted to the conductance change using eq. (5). The inset is the raw MR. (b) Temperature dependence of phase-coherence length. The solid line is the power law fit, which gives Lϕ ∝ T−1/2. The inset is the ΔG versus magnetic field curves at different temperatures.