Figure 4: Magnetic-field effect on photocurrent spectra of LSMO junctions.
From: Magneto-tunable photocurrent in manganite-based heterojunctions
(a,b) Photocurrent spectra measured at various temperatures without magnetic field for (001) and (110) junctions, respectively. The inset in a shows the temperature dependence of JSC at selected photon energies of 2.33 and 3.5 eV (marked by dashed vertical lines in a and b). The upper inset in b shows photocurrent spectra under 0 and 6 T magnetic fields taken at 150 K. (c,d) Relative photocurrent change (ΔJSC/JSC0) with the application of a 6-T field as functions of photon energy and temperature for LSMO(001) and (110) junctions, respectively (Due to poor signal-to-noise ratio, data obtained below hv=2 eV are omitted here). (e) A schematic image of the relationship between JSC and correlated gap in correlated junctions. The insets show the schematic band diagrams for (left) LSMO (001) junctions, (middle) LSMO (110) junction under high magnetic field (6 T) or high temperature (HT) and (right) LSMO (110) junction without magnetic field (0 T) or low temperature (LT), respectively.
