Results 81 to 90 of about 256,332 (266)

Effective Piecewise Mass Distributions for Optimal Energy Eigenvalues of a Particle in Low-Dimensional Heterojunctions

Nanomaterials
Systems composed of several multi-layer compounds have been extremely useful in tailoring different quantum physical properties of nanomaterials. This is very much true when it comes to semiconductor materials and, in particular, to heterostructures and ...
Josep Batle, Orion Ciftja, Mahmoud Abdel-Aty, Mohamed Ahmed Hafez, Shawkat Alkhazaleh   +4 more
doaj   +1 more source

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

Advanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen, Roger Guzman, Xiaomin Jia, Jialu Wu, Xing Xu, Li Sun, Jinbo Pan, Shixuan Du, Myung‐Hwan Whangbo, Wu Zhou, Jing Ma, Ce‐wen Nan, Chonglin Chen   +12 more
wiley   +1 more source

Spectral Investigation of Laser Structures using NSOM Experiment

Advances in Electrical and Electronic Engineering, 2005
We present for the first time the local spectral analysis of quantum well laser devices recorded in the near-field region. The distribution of mode spectra along and active region was scanned near-field scanning optical miecroscopy (NSOM).
Dusan Pudis, Jaroslav Kovac jr., Jaroslav Kovac, Ivan Martincek, Volker Gottschalch   +4 more
doaj  

Room‐Temperature Synthesis of Strongly Confined Lead Halide Perovskite Quantum Dots

Advanced Functional Materials, EarlyView.
CsPbX3${\rm CsPbX}_3$ lead halide perovskite quantum dots (QDs) are synthesized in a room‐temperature, five‐minute synthesis, yielding size‐controlled QDs with bright, tunable emission governed by reaction conditions and halide composition. A strongly binding ligand, OD‐PEA, ensures months‐long stability under ambient conditions and facilitates their ...
Anna Abfalterer, Yuzhen J. Zhou, Roshini Jayabalan, Julian Holzinger, Lukas M. Rescher, Rik Hooijer, Aladin Ullrich, Nina A. Henke, Immanuel Plangger, Erkan Aydin, Bert Nickel, Anne K. Schütz, Wolfgang Brütting, Alexander S. Urban   +13 more
wiley   +1 more source

Temperature dependence of electron effective mass in InGaN quantum wells

Materials Research Express
Photoluminescence of light emitting In x Ga _1− _x N/GaN diode structures in a wide temperature range from 80 to 400 K is studied. Temperature dependence of the positions of the bands related to recombination in the InGaN quantum wells (QWs) and GaN ...
Roman Redko, Vladyslav Kaliuzhnyi, Oleksandr Kolomys, Oleksandr Belyaev   +3 more
doaj   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Embedded Ferroelectric Nanoclusters Can Drive Polarization Reversal in a Non‐Ferroelectric Polar Film via the Proximity Effect

Advanced Functional Materials, EarlyView.
Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska, Eugene A. Eliseev, Sergei V. Kalinin, Long‐Qing Chen, Dean R. Evans, Venkatraman Gopalan   +5 more
wiley   +1 more source

The Quantum Well of One-Dimensional Photonic Crystals

Advances in Condensed Matter Physics, 2015
We have studied the transmissivity of one-dimensional photonic crystals quantum well (QW) with quantum theory approach. By calculation, we find that there are photon bound states in the QW structure (BA)6(BBABB)n(AB)6, and the numbers of the bound states
Xiao-Jing Liu, Ji Ma, Xiang-Dong Meng, Hai-Bo Li, Jing-Bin Lu, Hong Li, Wan-Jin Chen, Xiang-Yao Wu, Si-Qi Zhang, Yi-Heng Wu   +9 more
doaj   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

Advanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou, Tingjun Zhong, Sijie Liu, Pouya Nosratkhah, Ke Xu, Yuzhen Zhao, Kristiaan Neyts   +6 more
wiley   +1 more source

Correlated Metal LaNiO3 as a p‐Type Transparent Conductor

Advanced Functional Materials, EarlyView.
p‐type transparent conducting oxides are needed to enable superstrate solar cell geometries with n‐type absorbers. The p‐type correlated metal LaNiO3 combines high optical transmission with low electrical resistivity and is compatible with a range of scalable deposition processes.
Shivang Beniwal, Emmeline G. Poole, Jacob Plowman, Troy D. Manning, Teresa Partida Manzanera, Kevin Sanderson, Matthew S. Dyer, Matthew J. Rosseinsky, Jonathan Alaria   +8 more
wiley   +1 more source