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Interface reconstruction in V-oxide heterostructures determined by x-ray absorption spectroscopy
H. Wadati, D. G. Hawthorn, J. Geck +7
We present an x-ray absorption study of the dependence of the V oxidation state on the thickness of LaVO (LVO) and capping LaAlO (LAO) layers in the multilayer structure of…
Nonlinear Optical Response of SrTiO3/LaAlO3 Superlattices
N. Ogawa, K. Miyano, M. Hosoda +4
The electronic symmetry of the SrTiO3/LaAlO3 interface was investigated by optical second harmonic generation, using superlattices with varying periodicity to study the evolution o…
Modulation Doping of a Mott Quantum Well by a Proximate Polar Discontinuity
T. Higuchi, Y. Hotta, T. Susaki +2
We present evidence for hole injection into LaAlO3/LaVO3/LaAlO3 quantum wells near a polar surface of LaAlO3 (001). As the surface is brought in proximity to the LaVO3 layer, an ex…
Termination Control of the Interface Dipole in LaSrMnO/Nb:SrTiO (001) Schottky Junctions
Yasuyuki Hikita, Mitsuru Nishikawa, Takeaki Yajima +1
In order to investigate the interface termination dependence of perovskite band alignments, we have studied the Schottky barrier height at LaSrMnO/Nb:SrTiO…
Electronic structure of the SrTiO/LaAlO interface revealed by resonant soft x-ray scattering
H. Wadati, D. G. Hawthorn, J. Geck +11
We investigated the electronic structure of the SrTiO/LaAlO superlattice (SL) by resonant soft x-ray scattering. The (003) peak, which is forbidden for our "ideal" SL struc…
Remote hole-doping of Mott insulators on the nanometer scale
M. Takizawa, Y. Hotta, T. Susaki +12
At interfaces between polar and nonpolar perovskite oxides, an unusual electron-doping has been previously observed, due to electronic reconstructions. We report on remote hole-dop…