A5031401210- Electronic and Structural Properties of Oxides
- Magnetic and transport properties of perovskites and related materials
- Advanced Memory and Neural Computing
- Advanced Condensed Matter Physics
- Magnetic properties of thin films
- Magnetic Properties and Applications
- Topological Materials and Phenomena
- Metallic Glasses and Amorphous Alloys
- Multiferroics and related materials
- Quantum and electron transport phenomena
- Aluminum Alloy Microstructure Properties
- Thin-Film Transistor Technologies
- Nanomaterials and Printing Technologies
- ZnO doping and properties
- Theoretical and Computational Physics
- Catalysis and Oxidation Reactions
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum many-body systems
- Quantum, superfluid, helium dynamics
- Ferroelectric and Negative Capacitance Devices
- Magnesium Alloys: Properties and Applications
- Neural dynamics and brain function
- Semiconductor materials and devices
- Neuroscience and Neural Engineering
Superconducting and other Innovative Materials and Devices Institute
2022-2023
National Research Council
2023
Institut de Ciència de Materials de Barcelona
2019-2021
Universitat Autònoma de Barcelona
2020-2021
Indium tin oxide (ITO) is the most widely used transparent conductor in applications such as light emitting diodes, liquid crystal devices, touch screens, and photovoltaic cells. So far, its use has mainly been limited to visible range (380 nm–750 nm), it reflects at longer wavelengths and, consequently, transmission low. Here, we introduce a simple technique, based on high temperature annealing, which can reduce reflection near-infrared (750 nm–2400 nm). With an optimized set of parameters,...
Abstract Multi-orbital physics in quasi-two-dimensional electron gases (q2DEGs) triggers intriguing phenomena not observed bulk materials, such as unconventional superconductivity and magnetism. Here, we investigate the mechanism of orbital selective switching spin-polarization oxide q2DEG formed at (001) interface between LaAlO 3 , EuTiO SrTiO band insulators. By using density functional theory calculations, transport, magnetic x-ray spectroscopy measurements, find that filling...
Magnetostriction, known as the ability of magnetic materials to expand or contract in response field, is a key property Fe-Ga alloys exploited various types transducers. Usually, thin films deposited on rigid substrates suffer from clamping effect that hinders propagation strain. Herein, with macroporous, not fully constrained, geometry are prepared by electrodeposition metallized silicon templated sub-micrometer-sized polystyrene spheres. For comparison, fully-dense and inherently...
Persistent photoconductance is a phenomenon found in many semiconductors, by which light induces long-lived excitations electronic states. Commonly, persistent photoexcitation leads to an increase of carriers (accumulation), though occasionally it can be negative (depletion). Here, we present the quantum well at ${\mathrm{LaAlO}}_{3}/{\mathrm{SrTiO}}_{3}$ interface, where addition photoinduced accumulation, secondary enables carrier depletion. The balance between both processes wavelength...
Interfacial inversion symmetry breaking gives rise to electronic properties that differ substantially from those of the bulk constituent materials. Here, we report on realization an artificial ferromagnetic quasi-two-dimensional electron gas (q2DEG) at (111) interfaces between LaAlO3, EuTiO3, and SrTiO3 characterized by a reconstruction quasioctahedral crystal field into trigonal one. The q2DEG is created through transfer electrons EuTiO3 layers interface with extending first SrTiO3, as...
We report scanning tunneling microscopy (STM) and x-ray photoemission spectroscopy (XPS) measurements on uncapped ${\mathrm{SrTiO}}_{3}$ (STO) capped ${\mathrm{NdNiO}}_{2}$ realized by pulsed-laser deposition ex situ topotactic reduction process. find that untreated surfaces are insulating contain Ni mostly in a nominal ${\mathrm{Ni}}^{2+}$ oxidation state. Room temperature STM shows signatures of striped-like topographic pattern, possibly compatible with recent reports ordered oxygen...
Abstract In a 2D electron system (2DES) the breaking of inversion, time‐reversal and bulk crystal‐field symmetries is interlaced with effects spin‐orbit coupling (SOC) triggering exotic quantum phenomena. Here, epitaxial engineering used to design realize 2DES characterized simultaneously by ferromagnetic order, large Rashba SOC hexagonal band warping at (111) interfaces between LaAlO 3 , EuTiO SrTiO insulators. The displays anomalous corrections magneto‐conductance driven...
Magneto-ionics refers to the non-volatile control of magnetic properties materials by voltage-driven ion migration. This phenomenon constitutes one most important magnetoelectric mechanisms and, so far, it has been employed modify easy axis thin films, their coercivity or net magnetization. Herein, a novel magneto-ionic effect is demonstrated: transition from vortex coherent rotation states, caused voltage-induced motion, in arrays patterned nanopillars. Electrolyte-gated Co/GdOx bilayered...
We report on transport measurements under optical stimulation of persistent photoconductance (PPC) at the interface between amorphous LaAlO3 films and SrTiO3 crystals. The spectral response in visible region was analyzed varying illumination conditions exposure times down to milliseconds. PPC is plastically modulated by stimuli strength duration, demonstrating fine-tuned photoconductive responsivity over a diversity cumulated timespans. Interestingly, optimal conditions, sensitive intensity...
Recently, inspired by neurobiological information processing, correlation-based learning has been expressed physically in nonbiological systems exploiting the time causality of electric signals. Yet, capability to learn from visual events requires extending these concepts optical stimuli. Here we show a solid-state system that is sensitive 100 ms-scale timing pairs light stimuli with complementary short/long visible wavelengths, causing asymmetric changes photoconductance. This property...
In two-dimensional electron systems (2DES) the breaking of inversion, time-reversal and bulk crystal-field symmetries is interlaced with effects spin-orbit coupling (SOC) triggering exotic quantum phenomena. Here, we used epitaxial engineering to design realize a 2DES characterized simultaneously by ferromagnetic order, large Rashba SOC hexagonal band warping at (111) interfaces between LaAlO$_{3}$, EuTiO$_{3}$ SrTiO$_{3}$ insulators. The displays anomalous corrections magneto-conductance...
We establish an exact mapping between identical particles in one dimension with arbitrary exchange statistics, including bosons, anyons and fermions, provided they share the same scattering length. This boson-anyon-fermion facilitates construction of from a linear superposition spatially symmetric anti-symmetric states. demonstrate this spin-1/2 Fermi gas coexistent s- p-wave interactions, where both types bound states can be supported by manipulating spin channels. With suitable...
We report on the effects of visible light low temperature electronic properties spin-polarized two dimensional electron system (2DES) formed at interfaces between LaAlO[Formula: see text], EuTiO[Formula: text] and (001) SrTiO[Formula: text]. A strong, persistent modulation both longitudinal transverse conductivity was obtained using emitting diodes (LEDs) with emissions different wavelengths in spectrum range. In particular, Hall effect data show that induces a non-volatile filling bands...