Understanding the transport in ultrathin epitaxial La0.3Sr0.7MnO3 (LSMO) is a topic widespread current interest. Here, the authors explore electron-electron interactions in low temperature magneto-transport in straight and zigzag nanowires fabricated from ultrathin epitaxial LSMO films grown to different thicknesses on SrTiO3 (100) substrates. They find that three-dimensional electron-electron interactions can explain the resistivity upturn, including many changes observed with film thickness, nano-patterning, and magnetic field.
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See supplementary material at https://doi.org/10.1116/1.5085669 for SEMs, ohmic I-V behavior, fitting parameters and the resistivity upturn at zero and finite magnetic field for all devices.
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