Au chain structures have been prepared on Ni(110). Au6 s,p-derived features in photoemission spectra are identified as quantum-wire states due to their strong dispersion along the chains and absence of dispersion perpendicular to the chains in agreement with our ab initio calculation of the electronic structure. Spin analysis reveals that the states have minority-spin character showing that the confinement of electrons in the chain structure depends on the electron spin.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.85.2561 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Floquet engineering of interparticle correlations in electron-hole few-body system for strong radial confinement.
J Phys Condens Matter
October 2024
AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Cracow, Poland.
We investigate the effects of off-resonant THz-frequency laser light coupling to bound few-body electron-hole system, i.e. the exciton and negatively charged trion confined in quantum wire.
View Article and Find Full Text PDFFull-color fiber light-emitting diodes based on perovskite quantum wires.
Sci Adv
May 2024
Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.
Article Synopsis
- * Researchers achieved this by using a dip-coating technique to grow perovskite quantum wire arrays on aluminum fibers, resulting in full-color light emissions at red, green, and sky-blue wavelengths.
- * The developed Fi-LEDs are enhanced with polydimethylsiloxane packaging, granting them mechanical flexibility, stretchability, and waterproof properties, while the aluminum fiber's plasticity allows for innovative one-dimensional to three-dimensional design possibilities.
Andreev reflection in graphene nanoribbons induced by-wave superconductors.
J Phys Condens Matter
December 2023
Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e. V., Hausvogteiplatz 5-7, 10117 Berlin, Germany.
Honeycomb and square lattices are combined as a tight-binding model to examine the Andreev reflection in graphene nanoribbons induced by a superconductor. The superconducting symmetry is assumed to be the-wave. The zero-bias tunneling conductance peak, which is generally produced by the-wave superconductor, is absent for the nanoribbons under conditions similar to those when a quantum wire is the normal conductor.
View Article and Find Full Text PDFA New Metal-Free Molecular Perovskite-Related Single Crystal with Quantum Wire Structure for High-Performance X-Ray Detection.
Small
March 2024
Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China.
The family of metal-free molecular perovskites, an emerging novel class of eco-friendly semiconductor, welcomes a new member with a unique 1D hexagonal perovskite structure. Lowering dimensionality at molecular level is a facile strategy for crystal structure conversion, optoelectronic property regulation, and device performance optimization. Herein, the study reports the design, synthesis, packing structure, and photophysical properties of the 1D metal-free molecular perovskite-related single crystal, rac-3APD-NHI(rac-3APD= racemic-3-Aminopiperidinium), that features a quantum wire structure formed by infinite chains of face-sharing NHI octahedra, enabling strong quantum confinement with strongly self-trapped excited (STE) states to give efficient warm orange emission with a photoluminescence quantum yield (PLQY) as high as ≈41.
View Article and Find Full Text PDFUltra-broadband depolarization based on directly-coupled quantum wire-to-well modulation and their aliasing effect for polarization-insensitive light-emitting diodes.
Nanoscale
November 2023
School of Physics, Beihang University, Beijing 102206, China.
Nowadays, strained quantum structures have been widely used in various light-emitting devices with a variety of compounds for progressive applications. However, the lattice-mismatch-induced strains in the materials would cause a problem of polarization dependence for polarization-independent optical applications. To address this issue, in this paper we propose a novel ultra-broadband depolarization mechanism and approach based on a directly-coupled well-wire-hybrid nanostructure.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!