Report

Pascal conductance series in ballistic one-dimensional LaAlO3/SrTiO3 channels

See allHide authors and affiliations

Science  14 Feb 2020:
Vol. 367, Issue 6479, pp. 769-772
DOI: 10.1126/science.aat6467

You are currently viewing the editor's summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

An unusual conductance sequence

Effects of correlations between electrons are enhanced in systems of reduced dimensions. The two-dimensional interface between two oxide materials, lanthanum aluminate (LaAlO3) and strontium titanate (SrTiO3), exhibits magnetism and superconductivity. In even lower-dimensional systems fabricated in similar heterostructures, electrons can pair without going superconducting. Briggeman et al. have now observed another exotic effect in LaAlO3/SrTiO3 waveguides: At certain magnetic fields, the conductance in these one-dimensional systems exhibits steps of an unconventional sequence. To understand the experimental data, the researchers used a model that accounted for interactions between electrons and found that the phenomenology was consistent with the formation of a series of correlated phases characterized by bound states of three or more electrons.

Science, this issue p. 769

View Full Text

Stay Connected to Science