Results 1 to 10 of about 306,621 (72)

Design of acoustic metamaterials through nonlinear programming [PDF]

open access: yes, 2016
The dispersive wave propagation in a periodic metamaterial with tetrachiral topology and inertial local resonators is investigated. The Floquet-Bloch spectrum of the metamaterial is compared with that of the tetrachiral beam lattice material without ...
A Bacigalupo   +14 more
core   +2 more sources

How many surface modes does one see on the boundary of a Dirac material? [PDF]

open access: yes, 2020
We present full expressions for the surface part of polarization tensor of a Dirac fermion confined in a half-space in $3+1$ dimensions. We compare this tensor to the polarization tensor of eventual surface mode (which is a $2+1$ dimensional Dirac ...
Kurkov, Maxim, Vassilevich, Dmitri
core   +3 more sources

Nodal-link semimetals [PDF]

open access: yes, 2017
In topological semimetals, the valence band and conduction band meet at zero-dimensional nodal points or one-dimensional nodal rings, which are protected by band topology and symmetries.
Bi, Ren   +5 more
core   +2 more sources

Degeneracies and fluctuations of N\'e\`el skyrmions in confined geometries [PDF]

open access: yes, 2015
The recent discovery of tunable Dzyaloshinskii-Moriya interactions in layered magnetic materials with perpendicular magnetic anisotropy makes them promising candidates for stabilization and manipulation of skyrmions at elevated temperatures.
Barkema, G. T.   +6 more
core   +8 more sources

On the quest for the strongest materials [PDF]

open access: yesScience, 360 (6386), 264-265, 2018, 2021
Looking for the strongest material has always been a scientific goal for the structural materials community.
arxiv  

Looking for Design in Materials Design [PDF]

open access: yesNature Materials 3, 659 (2004), 2004
Despite great advances in computation, materials design is still science fiction. The construction of structure-property relations on the quantum scale will turn computational empiricism into true design.
arxiv   +1 more source

Magnon contribution to unidirectional spin Hall magnetoresistance [PDF]

open access: yes, 2019
We develop a model for the magnonic contribution to the unidirectional spin Hall magnetoresistance (USMR) of heavy metal/ferromagnetic insulator bilayer films.
Duine, R. A.   +2 more
core   +2 more sources

Multiscale approaches to high efficiency photovoltaics [PDF]

open access: yes, 2015
While renewable energies are achieving parity around the globe, efforts to reach higher solar cell efficiencies becomes ever more difficult as they approach the limiting efficiency.
Connolly, J. P.   +5 more
core   +1 more source

Wavevector-dependent optical properties from wavevector-independent proper conductivity tensor

open access: yes, 2020
We discuss the calculation of the refractive index by means of the ab initio scalar dielectric function and point out its inherent limitations. To overcome these, we start from the recently proposed fundamental, microscopic wave equation in materials in ...
Giulio A.H. Schober   +4 more
core   +1 more source

Super Dielectric Materials [PDF]

open access: yes, 2014
Evidence is provided that a class of materials with dielectric constants greater than 100,000, herein called super dielectric materials (SDM), can be generated readily from common, inexpensive materials.
arxiv   +1 more source

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