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(Color online) XRD θ-2θ data around the (002) peak of LSMO in pseudo-cubic notation, for various film thicknesses. Left inset: RHEED intensity oscillations during the growth of 8 u.c. of LSMO on LSAT. Right inset: AFM image of an 8 u.c. LSMO sample, showing a clear step-and-terrace surface.
Temperature dependence of (a) the resistivity and (b) the in-plane magnetization of LSMO thin films with various d LSMO. Magnetization was measured field-cooled in an external field of μ 0 H = 0.1 T. Inset: In-plane normalized magnetization as a function of applied field for d LSMO = 6 u.c. at T = 10 K.
(Color online) Thickness-dependent phase diagram of LSMO thin films grown on LSAT (blue diamonds and square) and on STO (black circles). LSMO/STO data are taken from Ref. 15. Open and closed diamonds refer to T C defined by magnetization and resistivity data, respectively, and the solid square shows T* (defined as the local maximum of d2 ρ(T)/dT 2). The black dashed lines show the phase boundaries for the LSMO/LSAT samples.
(a) Resistivity as a function of external magnetic field for d LSMO = 8 u.c. Inset: Magnetoresistance vs. temperature for various fields between 0 T and 12 T. Arrows for the 0 T data indicate the cooling and warming measurements. No hysteresis is observable. (b) T-H phase diagram for the d LSMO = 8 u.c. sample. Diamond and square symbols refer to TC and T*, respectively. Lines are a guide to the eye.
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