High‐Mobility 2D Hole Gas at a SrTiO 3 Interface

Origin of Interface Magnetism in BiMnO 3 / SrTiO 3 and LaAlO 3 / SrTiO 3

Possible ferromagnetism induced in otherwise nonmagnetic materials has been motivating intense research in complex oxide heterostructures. Here we show that a confined magnetism is realized at the interface between SrTiO3 and two insulating polar oxides, BiMnO3 and LaAlO3. By using polarization dependent x-ray absorption spectroscopy, we find that in both cases the magnetism can be stabilized b...

Electrical properties and subband occupancy at the ( La , Sr ) ( Al , Ta ) O 3 / SrTiO 3 interface

K. Han,1,2 Z. Huang,1,2,* S. W. Zeng,1,2 M. Yang,3 C. J. Li,4 W. X. Zhou,1,2 X. Renshaw Wang,5 T. Venkatesan,1,2,4,6,7 J. M. D. Coey,1,8 M. Goiran,3 W. Escoffier,3 and Ariando1,2,6,† 1NUSNNI-NanoCore, National University of Singapore, Singapore 117411, Singapore 2Department of Physics, National University of Singapore, Singapore 117542, Singapore 3Laboratoire National des Champs Magnétiques Int...

Electronic phase separation at the LaAlO₃/SrTiO₃ interface.

There are many electronic and magnetic properties exhibited by complex oxides. Electronic phase separation (EPS) is one of those, the presence of which can be linked to exotic behaviours, such as colossal magnetoresistance, metal-insulator transition and high-temperature superconductivity. A variety of new and unusual electronic phases at the interfaces between complex oxides, in particular bet...

Energy - loss structure in core - level photoemission satellites of SrTiO 3 , SrTiO 3 : La , and SrTiO 3

Superconductivity of SrTiO 3 − δ

Superconducting SrTiO 3−δ was obtained by annealing single crystalline SrTiO3 samples in ultra high vacuum. An analysis of the V (I) characteristics revealed very small critical currents Ic which can be traced back to a unavoidable doping inhomogeneity. R(T) curves were measured for a range of magnetic fields B at I ≪ Ic, thereby probing only the sample regions with highest doping level. The re...