Results 81 to 90 of about 5,131 (236)

Breaking the doping limit in silicon by deep impurities

open access: yes, 2018
N-type doping in Si by shallow impurities, such as P, As and Sb, exhibits an intrinsic limit due to the Fermi-level pinning via defect complexes at high doping concentrations.
Berencén, Y.   +12 more
core   +1 more source

Diamondoids Under Pressure

open access: yesGeophysical Monograph Series, Page 341-349., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sulgiye Park, Yu Lin, Wendy L. Mao
wiley  

+1 more source

Research Update: Spatially resolved mapping of electronic structure on atomic level by multivariate statistical analysis

open access: yesAPL Materials, 2014
Atomic level spatial variability of electronic structure in Fe-based superconductor FeTe0.55Se0.45 (Tc = 15 K) is explored using current-imaging tunneling-spectroscopy.
Alex Belianinov   +7 more
doaj   +1 more source

Theoretical Study of the [4+2] Cycloaddition Reaction of Trifluoroethylene with Five-membered Chalcogens Heterocyclic Compounds

open access: yesARO-The Scientific Journal of Koya University, 2019
[4+2] cycloaddition reaction has enormous significant in organic chemistry synthesis reactions and yet remains unexplored for the synthesis of fluorine-containing compounds.
Haydar A. Mohammad-Salim   +1 more
doaj   +1 more source

Colossal photostructural changes in chalcogenide glasses. Athermal photoinduced polymerization in AsxS100-x bulk glasses revealed by near-bandgap Raman scattering

open access: yes, 2009
Near-bandgap Raman scattering was used to induce and study photostructural changes in AsxS100-x bulk glasses revealing a new photoinduced polymerization effect.
Kyriazis, F., Yannopoulos, S. N.
core   +1 more source

Ultrafast Control of Coherent Acoustic Lattice Dynamics in the Transition Metal Dichalcogenide Alloy WSSe

open access: yesAdvanced Physics Research, EarlyView.
Coherent acoustic phonons are generated and optically controlled in bulk WSSe alloy samples using ultrafast spectroscopy. The alloy exhibits a strong coherent acoustic response, which is not an intermediate state between WS? and WSe?. Instead, a much more complex mechanism is proposed.
Sergio I. Rey   +11 more
wiley   +1 more source

Effect of group-3 elements doping on promotion of in-plane Seebeck coefficient of n-type Mg3Sb2

open access: yesJournal of Materiomics, 2020
Mg3Sb2-based alloys are promising thermoelectric materials with a reasonably low thermal conductivity. However, their electrical transport property is usually limited by the low carrier concentration.
Chengliang Xia, Juan Cui, Yue Chen
doaj   +1 more source

First‐Principles Investigation of the Electronic, Phonon, Optical, and Elastic Properties of AgBiTeSe

open access: yesAdvanced Physics Research, EarlyView.
This study presents a first‐principles investigation of the electronic, vibrational, optical, and elastic properties of AgBiTeSe. The results highlight its metallic behavior, dynamic stability, strong optical absorption, and promising thermoelectric potential.
Nilufer Yesmin Tanisa   +3 more
wiley   +1 more source

Weak anisotropy of the superconducting upper critical field in Fe1.11Te0.6Se0.4 single crystals

open access: yes, 2009
We have determined the resistive upper critical field Hc2 for single crystals of the superconductor Fe1.11Te0.6Se0.4 using pulsed magnetic fields of up to 60T.
B. Qian   +10 more
core   +1 more source

Bis(trifluoromethyl)disulfide and the EtP4 Phosphazene Base—Formation of a Bench‐Stable [EtP4SCF3]+[SCF3]− Salt

open access: yesChemistry – A European Journal, EarlyView.
The synthesis of a bench‐stable trifluoromethylthiolate‐substituted phosphazenium salt is reported. Reaction of bis(trifluoromethyl)disulfide with the EtP4 phosphazene base furnishes this salt in quantitative yield. The compound features a unique trifluoromethylthiolate‐iminium motif and allows for functionalization of both trifluoromethylthiolate ...
Lukas Hartmann   +6 more
wiley   +1 more source

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