Hot electron transport in a strongly correlated transition-metal oxide.

ABSTRACT: Oxide heterointerfaces are ideal for investigating strong correlation effects to electron transport, relevant for oxide-electronics. Using hot-electrons, we probe electron transport perpendicular to the La?.?Sr?.?MnO? (LSMO)- Nb-doped SrTiO? (Nb:STO) interface and find the characteristic hot-electron attenuation length in LSMO to be 1.48 ± 0.10 unit cells (u.c.) at -1.9?V, increasing to 2.02 ± 0.16?u.c. at -1.3?V at room temperature. Theoretical analysis of this energy dispersion reveals the dominance of electron-electron and polaron scattering. Direct visualization of the local electron transport shows different transmission at the terraces and at the step-edges.

SUBMITTER: Rana KG 

PROVIDER: S-EPMC3572443 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature