Results 101 to 110 of about 290,242 (293)

Transient currents in a molecular photo-diode

open access: yes, 2012
Light-induced charge transmission through a molecular junction (molecular diode) is studied in the framework of a HOMO-LUMO model and in using a kinetic description.
Hänggi, P.   +3 more
core   +1 more source

2D Multifunctional Spin‐Orbit Coupled Dirac Nodal Line Materials

open access: yesAdvanced Functional Materials, EarlyView.
A total of 473 nonmagnetic and antiferromagnetic 2D spin‐orbit coupled Dirac nodal line materials are screened, spanning 5 layer groups and 12 magnetic space groups. Furthermore, it integrates their topological properties with electride, multiferroic, and magnetic characteristics, revealing unique systems with expanded functionalities and promising ...
Weizhen Meng   +7 more
wiley   +1 more source

Production cross sections of gamma-rays, electrons, and positrons in p-p collisions

open access: yes, 2014
Because the production cross sections of gamma-rays, electrons, and positrons made in p-p collisions, $\sigma_{pp\rightarrow \gamma}$ and $\sigma_{pp\rightarrow {e}^\pm}$, respectively, are kinematically equivalent with respect to the parent pion ...
Kohri, K.   +3 more
core   +1 more source

Upper Bounds for the Total π-Electron Energy of Benzenoid Hydrocarbons and Their Relations

open access: yes, 1986
Upper bounds for the total π-electron energy of benzenoid hydrocarbons, depending on the number of carbon atoms and carbon-carbon bonds, are examined and several of their properties established.
J. Cioslowski, I. Gutman
semanticscholar   +1 more source

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

open access: yesAdvanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp   +7 more
wiley   +1 more source

A solvable model for excitonic complexes in one dimension

open access: yes, 1997
It is known experimentally that stable few-body clusters containing negatively-charged electrons (e) and positively-charged holes (h) can exist in low-dimensional semiconductor nanostructures.
Johnson, N. F., Markvardsen, A. J.
core   +1 more source

The Use of the Gauss-Chebyshev Quadrature in Estimation of the Total π -Electron Energy of Benzenoid Hydrocarbons

open access: yes, 1985
The application of the Gauss-Chebyshev quadrature to the integral type formula for the total π-electron energy (Eπ) leads to the well-known relation between the Hosoya modified topological index Z̃ and Eπ.
J. Cioslowski
semanticscholar   +1 more source

Controlled Aggregation of Pyrene‐Based Supramolecular Nanostructures for Light‐Driven Switchable H2 or H2O2 Production

open access: yesAdvanced Functional Materials, EarlyView.
This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri   +6 more
wiley   +1 more source

Two-dimensional coronene fractals: modified reverse degree indices, comparative analysis of information entropy and predictive modeling of spectral properties

open access: yesFrontiers in Chemistry
Topological characterization through graph-theoretical methods translates chemical and structural data into quantitative values that represent the molecular system.
A. R. Abul Kalaam, A. Berin Greeni
doaj   +1 more source

Doping dependent optical properties of Bi2201

open access: yes, 2009
An experimental study of the in-plane optical conductivity of (Pb$_{x}$,Bi$_{2-x}$)(La$_{y}$Sr$_{2-y}$)CuO$_{6+\delta}$ (Bi2201) is presented for a broad doping and temperature range.
A B Kuzmenko   +10 more
core   +2 more sources

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