Y. Hikita

Electronic structure of the SrTiO$_3$/LaAlO$_3$ interface revealed by resonant soft x-ray scattering (2008)

Wadati, H., Hawthorn, D. G., Geck, J., Higuchi, T., Hikita, Y., Hwang, H. Y., ...

We investigated the electronic structure of the SrTiO$_3$/LaAlO$_3$ superlattice (SL) by resonant soft x-ray scattering. The (003) peak, which is forbidden for our "ideal" SL structure, was observed...

Negative Differential Resistance Induced by Mn Substitution at SrRuO3/Nb:SrTiO3 Schottky Interfaces (2008)

Hikita, Y., Kourkoutis, L. Fitting, Susaki, T., Muller, D. A., Takagi, H., Hwang, H. Y.

We observed a strong modulation in the current-voltage characteristics of SrRuO$_3$/Nb:SrTiO$_3$ Schottky junctions by Mn substitution in SrRuO$_3$, which induces a metal-insulator transition in...

Optically tuned dimensionality crossover in photocarrier-doped SrTiO$_3$: onset of weak localization (2007)

Kozuka, Y., Hikita, Y., Susaki, T., Hwang, H. Y.

We report magnetotransport properties of photogenerated electrons in undoped SrTiO$_3$ single crystals under ultraviolet illumination down to 2 K. By tuning the light intensity, the steady state...

Characterization of the Schottky Barrier in SrRuO3/Nb:SrTiO3 Junctions (2007)

Hikita, Y., Kozuka, Y., Susaki, T., Takagi, H., Hwang, H. Y.

Internal photoemission spectroscopy was used to determine the Schottky barrier height in rectifying SrRuO3/Nb-doped SrTiO3 junctions for 0.01 wt % and 0.5 wt % Nb concentrations. Good agreement was...