Electron-electron interactions in nano-patterned La 0.3 Sr 0.7 MnO 3 thin films

Laurie E Calvet (1) , Guillaume Agnus (2) , Philippe Lecoeur (2)

1 C2N (UMR_9001) - Centre de Nanosciences et Nanotechnologies
2 C2N - Centre de Nanosciences et de Nanotechnologies [Orsay]

Understanding the transport in ultra-thin epitaxial La0.3Sr0.7MnO3 (LSMO) is a topic widespread current interest. Here we explore electron-electron interactions in low temperature magneto-transport in straight and zigzag nanowires fabricated from ultra-thin epitaxial LSMO films grown to different thicknesses on STO(100) substrates. We find that three-dimensional electron-electron interactions can explain the resistivity upturn, including many of the changes observed with film thickness, nano-patterning, and magnetic field.

Domaines: Matière Condensée [cond-mat]

Laurie E Calvet, Guillaume Agnus, Philippe Lecoeur. Electron-electron interactions in nano-patterned La 0.3 Sr 0.7 MnO 3 thin films. Journal of Vacuum Science & Technology A, 2019, 37 (3), pp.031504. ⟨10.1116/1.5085669⟩. ⟨hal-02389082⟩