Results 61 to 70 of about 790,133 (299)

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

Advanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben, Nicolas Gauquelin, Arno Annys, Zhaoliang Liao, Jo Verbeeck, Guus Rijnders, Gertjan Koster   +6 more
wiley   +1 more source

Chemically triggered formation of two-dimensional epitaxial quantum dot superlattices [PDF]

, 2016
Two dimensional superlattices of epitaxially connected quantum dots enable size-quantization effects to be combined with high charge carrier mobilities, an essential prerequisite for highly performing QD devices based on charge transport.
De Roo, Jonathan, Dendooven, Jolien, Detavernier, Christophe, Drijvers, Emile, Hens, Zeger, Infante, Ivan, Solano Minuesa, Eduardo, ten Brinck, Stephanie, Walravens, Willem   +8 more
core   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

A comparative study of InGaAs/InAsSb and InAs/InAsSb strained layer superlattices

Frontiers in Materials
Over the past decade, InAs/InAsSb superlattices and their photodetectors have been widely studied due to their potential applications in high-performance infrared detectors.
H. X. Yin, Zh. Wang, J. Zhang, Zh. Jiang, Ch. Chang, G. R. Deng, X. C. Zhou, J. Yang, W. Lei, R. B. Ji   +9 more
doaj   +1 more source

InAs/GaSb Superlattice Based Mid-Infrared Interband Cascade Photodetectors Grown on Both Native GaSb and Lattice-Mismatched GaAs Substrates

Proceedings, 2019
Electrical and optical properties of interband cascade infrared photodetectors with InAs/GaSb type-II superlattice absorbers are investigated in this work.
Klaudia Hackiewicz, Małgorzata Kopytko, Jarosław Rutkowski, Piotr Martyniuk, Łukasz Ciura   +4 more
doaj   +1 more source

The Dependence of InAs/InAsSb Superlattice Detectors’ Spectral Response on Molecular Beam Epitaxy Growth Temperature

Applied Sciences, 2022
In this paper, we report on the influence of molecular beam epitaxial (MBE) growth temperature on the spectral response of the long-wavelength infrared radiation (LWIR), three-stage thermoelectrically (TE) cooled (T = 210, 230 K) InAs/InAsSb type-II ...
Krystian Michalczewski, Jarosław Jureńczyk, Łukasz Kubiszyn, Piotr Martyniuk   +3 more
doaj   +1 more source

On the ferromagnetic character of (LaVO$_3$)$_m$/SrVO$_3$ superlattices

, 2012
The experimental observation that vanadate superlattices (LaVO$_3$)$_m$/SrVO$_3$ show ferromagnetism up to room temperature [U.\ L\"uders {\it et al.}, Phys.\ Rev.\ B {\bf 80}, 241102R (2009)] is investigated by means of density functional theory. First,
Fresard, Raymond, Lueders, Ulrike, Schuster, Cosima, Schwingenschloegl, Udo   +3 more
core   +3 more sources

Superlattice-induced ferroelectricity in charge-ordered La$_{1/3}$Sr$_{2/3}$FeO$_{3}$ [PDF]

, 2019
Charge-order-driven ferroelectrics are an emerging class of functional materials, distinct from conventional ferroelectrics, where electron-dominated switching can occur at high frequency.
Neaton, Jeffrey B., Park, Se Young, Rabe, Karin M.   +2 more
core   +3 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Electrically tunable GHz oscillations in doped GaAs-AlAs superlattices

, 1997
Tunable oscillatory modes of electric-field domains in doped semiconductor superlattices are reported. The experimental investigations demonstrate the realization of tunable, GHz frequencies in GaAs-AlAs superlattices covering the temperature region from
A. M. Kahn, A. Sibille, A. Wacker, A. Wacker, A. Wacker, B. K. Ridley, C. Zener, F. Bloch, F. J. Higuera, H. Le Person, H. Schneider, H. T. Grahn, H. T. Grahn, H. T. Grahn, H. T. Grahn, H. T. Grahn, J. B. Gunn, J. Feldmann, J. Galán, J. Iñarrea, J. Kastrup, J. Kastrup, J. Kastrup, J. Kastrup, J. Kastrup, K. H. Ploog, L. Esaki, L. L. Bonilla, L. L. Bonilla, M. Hadjazi, M. J. Bergmann, M. Kindelan, M. Moscoso, M. Shur, O. M. Bulashenko, O. M. Bulashenko, R. Hey, S. H. Kwok, S. H. Kwok, T. G. Ruttan, Y. Kawamura, Y. Zhang, Y. Zhang   +42 more
core   +1 more source