A5054435709- Electronic and Structural Properties of Oxides
- Quantum and electron transport phenomena
- Semiconductor materials and devices
- Magnetic and transport properties of perovskites and related materials
- Ferroelectric and Negative Capacitance Devices
- Diamond and Carbon-based Materials Research
- Semiconductor Quantum Structures and Devices
- Cold Atom Physics and Bose-Einstein Condensates
- Magnetic confinement fusion research
- Semiconductor Lasers and Optical Devices
- Atomic and Subatomic Physics Research
- Quantum Information and Cryptography
- Surface and Thin Film Phenomena
- Ferroelectric and Piezoelectric Materials
- Magnetic Field Sensors Techniques
- Gyrotron and Vacuum Electronics Research
- Physics of Superconductivity and Magnetism
- Topological Materials and Phenomena
- Advanced Condensed Matter Physics
- Molecular Junctions and Nanostructures
- Quantum Computing Algorithms and Architecture
- Solar and Space Plasma Dynamics
- Material Properties and Failure Mechanisms
- Liquid Crystal Research Advancements
- Advancements in Semiconductor Devices and Circuit Design
University of Pittsburgh
2017-2020
Pittsburgh Quantum Institute
2017-2020
Purdue University West Lafayette
2015
SrTiO3-based heterointerfaces support quasi-two-dimensional (2D) electron systems that are analogous to III–V semiconductor heterostructures, but also possess superconducting, magnetic, spintronic, ferroelectric, and ferroelastic degrees of freedom. Despite these rich properties, the relatively low mobilities 2D complex-oxide interfaces appear preclude ballistic transport in 1D. Here we show LaAlO3/SrTiO3 interface can quantized electrons (nonsuperconducting) pairs within quasi-1D structures...
An unusual conductance sequence Effects of correlations between electrons are enhanced in systems reduced dimensions. The two-dimensional interface two oxide materials, lanthanum aluminate (LaAlO 3 ) and strontium titanate (SrTiO ), exhibits magnetism superconductivity. In even lower-dimensional fabricated similar heterostructures, can pair without going superconducting. Briggeman et al. have now observed another exotic effect LaAlO /SrTiO waveguides: At certain magnetic fields, the these...
The $\ensuremath{\nu}=5/2$ fractional quantum Hall effect is a system of intense experimental and theoretical interest as its ground state may host non-Abelian excitations, but the exact nature still undetermined. We present results an diagonalization study electron in disk configuration, including effects Landau level (LL) mixing finite thickness well confining electrons. degeneracy between two leading candidates for state, Pfaffian anti-Pfaffian, broken by interactions with neutralizing...
SrTiO$_3$-based heterointerfaces support quasi-two-dimensional (2D) electron systems that are analogous to III-V semiconductor heterostructures, but also possess superconducting, magnetic, spintronic, ferroelectric, and ferroelastic degrees of freedom. Despite these rich properties, the relatively low mobilities 2D complex-oxide interfaces appear preclude ballistic transport in 1D. Here we show LaAlO$_3$/SrTiO$_3$ interface can quantized electrons (non-superconducting) pairs within quasi-1D...
The $\nu=\frac{5}{2}$ fractional quantum Hall effect is of experimental and theoretical interest due to the possible non-Abelian statistics excitations in electron liquid. A small voltage difference across a sample applied experiments probe system often ignored studies Galilean invariance thermodynamic limit. No sample, however, invariant. In this work, we explore effects electric fields disk geometry with finite thickness. We find that weak enhance Moore-Read Pfaffian state but sufficiently...
Abstract The LaAlO 3 /SrTiO system exhibits unusual magnetic and superconducting behavior arising from electron–electron interactions whose physical origin is not well understood. Quantum transport techniques, especially those involving mesoscopic geometries, can offer insight into these interactions. Here evidence for long‐range in nanowires, measured through the phenomenon of frictional drag, reported, which current passing one nanowire induces a voltage across nearby electrically isolated...
We report frictional drag measurements between two superconducting LaAlO$_3$/SrTiO$_3$ nanowires. In these experiments, current passing through one nanowire induces a voltage across nearby electrically isolated nanowire. The signal contains both symmetric and antisymmetric components. component arises from the rectification of quantum shot noise in drive by broken symmetry resistance is ascribed to thermal during superconducting-normal transition. suppression observed when normal used as...
This paper describes a temporal-spatial model for video processing with special applications to event camera videos. We propose study conjecture motivated by our previous of delay loop reservoir (DLR) neural network, which we call Temporal-Spatial Conjecture (TSC). The TSC postulates that there is significant information content carried in the temporal representation signal and machine learning algorithms would benefit from separate optimization spatial components intelligent processing. To...
This book chapter reviews the experimental evidence for magnetic phenomena at LaAlO3/SrTiO3 interface. We argue that essentially all of signatures magnetism can be sorted into two distinct categories: (1) phases (e.g., ferromagnetic or Kondo) involving local moments and their coupling to itinerant electrons; (2) metamagnetic effects are mediated by attractive electron-electron interactions do not involve moments. review possible candidates give rise focus on arguments one potential source:...