Results 71 to 80 of about 19,972 (281)

Dynamics of Electric Field Domains and Oscillations of the Photocurrent in a Simple Superlattice Model

, 1994
A discrete model is introduced to account for the time-periodic oscillations of the photocurrent in a superlattice observed by Kwok et al, in an undoped 40 period AlAs/GaAs superlattice. Basic ingredients are an effective negative differential resistance
A. N. Korotkov, A. N. Korotkov, B. Laikhtman, D. A. B. Miller, F. C. Martínez, F. Capasso, F. Capasso, F. J. Higuera, H. J. Polland, H. Le Person, H. T. Grahn, H. T. Grahn, H. T. Grahn, H. T. Grahn, I. R. Cantalapiedra, J. A. Cuesta, J. Galán, J. M. Molera, L. Esaki, L. L. Bonilla, L. L. Bonilla, L. L. Bonilla, L. L. Bonilla, R. E. Cavicchi, R. F. Kazarinov, S. H. Kwok, S. W. Teitsworth   +26 more
core   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

Localized magnetoplasmon modes arising from broken translational symmetry in semiconductor superlattices

, 1999
The electromagnetic propagator associated with the localized collective magnetoplasmon excitations in a semiconductor superlattice with broken translational symmetry, is calculated analytically within linear response theory.
Albuquerque E L, Bass F G, Chang L L, Cottam M G, Cottam M G, Fetter A L, Granada J C, Granada J C, John H Reina, Joyce B A, Juan C Granada, Li Yibing, Liu N H, Liu N H, Neil F Johnson, Parker E H, Raj R, Reina J H, Reina J H, Rickayzen G, Stern F, Wendler L, Wendler L   +22 more
core   +1 more source

Infrared Nanocrystals for Space Application: Hardness to Irradiations

Advanced Functional Materials, EarlyView.
This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret, Dario Mastrippolito, Bingbing Xia, Adrien Khalili, Maxime Lebreton, Giorgia Strobbia, Albin Colle, Marco Paye, Mariarosa Cavallo, Erwan Bossavit, Claire Abadie, Yoann Prado, Debora Pierucci, Victor Parahyba, Francois Coursaget, David Darson, Emrick Briand, Ian Vickridge, Stephane Demiguel, Sebastien Massenot, Jean‐Marc Belloir, Vincent Goiffon, Emmanuel Lhuillier   +22 more
wiley   +1 more source

Design of long‐wavelength infrared InAs/InAsSb type‐II superlattice avalanche photodetector with stepped grading layer

Electron
Weak response in long‐wavelength infrared (LWIR) detection has long been a perennial concern, significantly limiting the reliability of applications. Avalanche photodetectors (APDs) offer excellent responsivity but are plagued by high dark current during
Keming Cheng, Kai Shen, Chuang Li, Daqian Guo, Hao Wang, Jiang Wu   +5 more
doaj   +1 more source

Hard X-ray standing-wave photoemission insights into the structure of an epitaxial Fe/MgO multilayer magnetic tunnel junction [PDF]

, 2019
The Fe/MgO magnetic tunnel junction is a classic spintronic system, with current importance technologically and interest for future innovation. The key magnetic properties are linked directly to the structure of hard-to-access buried interfaces, and the ...
Ciston, J, Conlon, CS, Conti, G, Fadley, CS, Gehlmann, M, Hjörvarsson, B, Keqi, A, Kuo, CT, Lin, SC, Moubah, R, Nemšák, S, Palsson, G, Rattanachata, A, Rault, J, Rueff, JP, Salmassi, F, Saw, A, Stolte, W   +17 more
core   +4 more sources

Surface Diffusion in SnTe‐PbTe Monolayer Lateral Heterostructures

Advanced Functional Materials, EarlyView.
The lateral heterostructures between 2D materials often suffer from the interdiffusion at the interfaces. Here, a surface diffusion mechanism is found to be dominating at the interfaces between semiconducting SnTe and PbTe monolayers. Atomically sharp interfaces can be achieved by suppressing this diffusion process. ABSTRACT The construction of complex
Jing‐Rong Ji, Zi'Ang Gao, Shiva Prasad Poudel, Rui‐Qi Cao, Tianzhe Chen, Luxin Li, Chong Liu, Salvador Barraza‐Lopez, Stuart S. P. Parkin, Kai Chang   +9 more
wiley   +1 more source

Surface passivation of (100) GaSb using self-assembled monolayers of long-chain octadecanethiol

AIP Advances, 2016
The passivation of (100) GaSb surface was investigated by means of the long-chain octadecanethiol (ODT) self-assembled monolayer (SAM). The properties of ODT SAM on (100) GaSb were characterized by the atomic force microscopy using Kelvin probe force ...
E. Papis-Polakowska, J. Kaniewski, J. Jurenczyk, A. Jasik, K. Czuba, A. E. Walkiewicz, J. Szade   +6 more
doaj   +1 more source

Multi-gap discrete vector solitons

, 2003
We analyze nonlinear collective effects in periodic systems with multi-gap transmission spectra such as light in waveguide arrays or Bose-Einstein condensates in optical lattices.
Kivshar, Yuri S., Sukhorukov, Andrey A.
core   +1 more source

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

Advanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan, Wentao Wang, Xiu Liang, Yongliang Zhang, Jie Liu, Yu Bai, Dangyuan Lei   +6 more
wiley   +1 more source