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Gate-tuned superfluid density at the superconducting LaAlO3/SrTiO3 interface
Julie A. Bert,1,2 Katja C. Nowack,3 Beena Kalisky,3,4 Hilary Noad,3 John R. Kirtley,3 Chris Bell,1 Hiroki K. Sato,1 Masayuki Hosoda,1 Yasayuki Hikita,1 Harold Y. Hwang,1,3 and Kathryn A. Moler1,2,3,*Expand
Critical thickness for ferromagnetism in LaAlO₃/SrTiO₃ heterostructures.
In LaAlO(3)/SrTiO(3) heterointerfaces, charge carriers migrate from the LaAlO(3) to the interface in an electronic reconstruction. Magnetism has been observed in LaAlO(3)/SrTiO(3), but itsExpand
Locally enhanced conductivity due to the tetragonal domain structure in LaAlO3/SrTiO3 heterointerfaces.
The ability to control materials properties through interface engineering is demonstrated by the appearance of conductivity at the interface of certain insulators, most famously the {001} interfaceExpand
Scanning probe manipulation of magnetism at the LaAlO3/SrTiO3 heterointerface.
Manipulation of magnetism is a longstanding goal of research in exotic materials. In this work, we demonstrate that the small ferromagnetic patches in LaAlO(3)/SrTiO(3) heterostructures can beExpand
Transistor operation and mobility enhancement in top-gated LaAlO3/SrTiO3 heterostructures
We report the operation of LaAlO3/SrTiO3 depletion mode top-gated junction field-effect transistors using a range of LaAlO3 thicknesses as the top gate insulator. Gated Hall bars show near idealExpand
Compositional and gate tuning of the interfacial conductivity in LaAlO3/LaTiO3/SrTiO3 heterostructures
We investigate the effect of LaTiO3 insertion at the interface between LaAlO3 and TiO2 terminated {100} SrTiO3 for a series of LaAlO3 and LaTiO3 thicknesses. A clear increase of the carrier densityExpand
Optical Study of Tetragonal Domains in LaAlO3/SrTiO3
Scanning superconducting quantum interference device (SQUID) measurements recently revealed enhanced channels of conductivity at the conducting LaAlO3/SrTiO3 (LAO/STO) interface (Kalisky et al. Nat.Expand
Enhanced lattice polarization in SrTiO3/LaAlO3 superlattices measured using optical second-harmonic generation
Lattice polarization at the ${\text{SrTiO}}_{3}/{\text{LaAlO}}_{3}$ interface was investigated by optical second harmonic generation. Superlattices with varying periodicity were employed to study theExpand
Revisited phase diagram on charge instability and lattice symmetry breaking in the organic ferroelectric TTF-QCl 4
We investigate the charge and lattice states in a quasi-one-dimensional organic ferroelectric material, TTF-QCl$_{4}$, under pressures of up to 35 kbar by nuclear quadrupole resonance experiments.Expand
The potential profile at the LaAlO3/SrTiO3 (001) heterointerface in operando conditions
We report measurements of the gate-bias dependent band alignment, especially the confining potential profile, at the conducting LaAlO3/SrTiO3 (001) heterointerface using soft and hard x-rayExpand