Results 21 to 30 of about 291,296 (268)

Magnetic anisotropy of graphene quantum dots decorated with a ruthenium adatom

open access: yesBeilstein Journal of Nanotechnology, 2013
The creation of magnetic storage devices by decoration of a graphene sheet by magnetic transition-metal adatoms, utilizing the high in-plane versus out-of-plane magnetic anisotropy energy (MAE), has recently been proposed. This concept is extended in our
Igor Beljakov   +5 more
doaj   +1 more source

Topological transitions in metals

open access: yesPhysical Review B, 2019
We investigate if a sharp topological transition in a metal with a large Fermi surface may be detected in transport measurements. In particular, we address if a skew scattering and a side jump on elastic disorder in the bulk of such a metal masks signatures of the topological transition.
Ying, Xuzhe, Kamenev, Alex
openaire   +3 more sources

Electronic Structure and Chemical Bonding of the First-, Second-, and Third-Row-Transition-Metal Monoborides: The Formation of Quadruple Bonds in RhB, RuB, and TcB

open access: yesMolecules, 2023
Boron presents an important role in chemistry, biology, and materials science. Diatomic transition-metal borides (MBs) are the building blocks of many complexes and materials, and they present unique electronic structures with interesting and peculiar ...
Constantinos Demetriou   +3 more
doaj   +1 more source

Recent advances in transition-metal-catalyzed intermolecular carbomagnesiation and carbozincation

open access: yesBeilstein Journal of Organic Chemistry, 2013
Carbomagnesiation and carbozincation reactions are efficient and direct routes to prepare complex and stereodefined organomagnesium and organozinc reagents.
Kei Murakami, Hideki Yorimitsu
doaj   +1 more source

Crystal structure of bis(azido-κN)bis[2,5-bis(pyridin-2-yl)-1,3,4-thiadiazole-κ2N2,N3]cobalt(II)

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the mononuclear title complex, [Co(N3)2(C12H8N4S)2], the cobalt(II) atom is located on an inversion centre and displays an axially weakly compressed octahedral coordination geometry.
Abdelhakim Laachir   +4 more
doaj   +1 more source

The Rearrangement of Alkylallenes to 1,3-Dienes

open access: yesReactions, 2022
1,3-Dienes are vital building blocks in organic synthesis. They underpin many fundamental synthetic transformations and are present in numerous natural products and drug candidate molecules.
Yassir Al-Jawaheri, Marc Colin Kimber
doaj   +1 more source

Deep Eutectic Solvents as à-la-Carte Medium for Transition-Metal-Catalyzed Organic Processes

open access: yesMolecules, 2022
Our society is facing a tremendous challenge to become more sustainable in every sphere of life. Regarding the chemical industry, one of the most significant issues to be addressed is the use of volatile organic compounds (VOCs) as solvents because they ...
Xavier Marset, Gabriela Guillena
doaj   +1 more source

Transition metal-based materials and their catalytic influence on MgH2 hydrogen storage: A review

open access: yesInternational Journal of Renewable Energy Development, 2023
The dependence on fossil fuels for energy has culminated in its gradual depletion and this has generated the need to seek alternative source that will be environmentally friendly and sustainable.
Oluwashina Philips Gbenebor   +1 more
doaj   +1 more source

METAL-INSULATOR TRANSITIONS IN TRANSITION METAL OXIDES

open access: yesLe Journal de Physique Colloques, 1971
There is a transition from band insulator to metal to Mott insulator with increasing number of d electrons in the transition metal oxides. In the (V1-xCrx)2O3 system a Mott transition occurs near x = 0.01. At high temperatures V2O3 and (V.99Cr.01)2 O3 are found to have similar resistivities and temperature coefficients of resistivity.
Mcwhan, D., Menth, A., Remeika, J.
openaire   +2 more sources

Approximating metal–insulator transitions [PDF]

open access: yesInternational Journal of Modern Physics B, 2015
We consider quantum wave propagation in one-dimensional quasiperiodic lattices. We propose an iterative construction of quasiperiodic potentials from sequences of potentials with increasing spatial period. At each finite iteration step, the eigenstates reflect the properties of the limiting quasiperiodic potential properties up to a controlled maximum
Danieli, Carlo   +4 more
openaire   +4 more sources

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