Results 11 to 20 of about 999 (173)

Symmetry-Imposed Selection Rules for Excitations of Nontrivial Plasmonic Topologies. [PDF]

Adv Sci (Weinh)
A unified group‐theory selection rule governs the excitation of vectorial nearfield topologies across three plasmonic spin states. Derived from first principles, it predicts spin–orbit vortex splitting and multidimensional nested vortices, confirmed by phase‐resolved in situ measurements.
Yang J, Feng P, Han F, Chen W, Jin Z, Ni J, Yang Y, Zhang A, Vandenbosch GAE, Verellen N, Janssens E, Wang J, Bai B, Qiu CW, Zheng X.   +14 more
europepmc   +2 more sources

Disclinations in quasicrystals [PDF]

Physical Review Letters, 1987
The most significant feature in the transition from the quasicrystalline to the amorphous state is the loss of long-range bond-orientational order. Disclinations are candidates for elementary excitations which destroy angular correlations. Generalizing the topological defect classification, we investigate point singularities in two-dimensional ...
Bohsung, Jörg, Trebin, Hans-Rainer
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INTERACTIONS IN QUASICRYSTALS [PDF]

International Journal of Modern Physics B, 2000
Although the effects of interactions in solid state systems still remains a widely open subject, some limiting cases such as the three dimensional Fermi liquid or the one-dimensional Luttinger liquid are by now well understood when one is dealing with interacting electrons in periodic crystalline structures.
Vidal, Julien, Mouhanna, Dominique, Giamarchi, Thierry   +2 more
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A parsimonious structure model for the icosahedral quasicrystal Cd_5.7Yb. [PDF]

Acta Crystallogr A Found Adv
The paper presents a parsimonious structure model for the icosahedral Cd5.7Yb quasicrystal. It employs only spherical and elliptical occupation domains, which significantly decreases the number of parameters and the required calculation effort. Still, the model describes the characteristic structural features with considerable accuracy.A compact ...
Feuerbacher M.
europepmc   +2 more sources

Fascinating quasicrystals [PDF]

Acta Crystallographica Section A Foundations of Crystallography, 2007
It took Dan Shechtman more than two years to get his discovery of an Al–Mn phase with icosahedral diffraction symmetryandsharp Bragg reflections published. A paradigm shift had to take place before this novel ordering state of matter – seemingly contradicting crystallographic laws – could be accepted.
Steurer W, Deloudi S
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Tetracoordinated quasicrystals [PDF]

Physical Review B, 1991
Current model networks for amorphous Ge contain five-membered rings and pentagonal dodecahedra to explain why in the radial distribution function the third peak of the diamond structure is missing. By presenting an algorithm based on a decoration of the three-dimensional Penrose quasilattice, we prove that this local pentagonal symmetry can be extended
Peters, Jochen, Trebin, Hans-Rainer
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Hyperuniformity of quasicrystals [PDF]

Physical Review B, 2017
12 pages, 14 ...
Oğuz, Erdal C., Socolar, Joshua E. S., Steinhardt, Paul J., Torquato, Salvatore   +3 more
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Formation of a single quasicrystal upon collision of multiple grains

Nature Communications, 2021
Quasicrystals exhibit long-range order without periodicity. The authors report an approach for quasicrystal fabrication and show through in situ imaging and corresponding simulations the formation of a single decagonal quasicrystal arising from ...
Insung Han, Kelly L. Wang, Andrew T. Cadotte, Zhucong Xi, Hadi Parsamehr, Xianghui Xiao, Sharon C. Glotzer, Ashwin J. Shahani   +7 more
doaj   +1 more source

2D honeycomb transformation into dodecagonal quasicrystals driven by electrostatic forces

Nature Communications, 2022
Quasicrystals are perfectly ordered crystals lacking translational symmetry. Here the authors unravel the formation mechanism of two-dimensional dodecagonal quasicrystals that arise from systematic modifications of a hexagonal honeycomb structure.
Sebastian Schenk, Oliver Krahn, Eric Cockayne, Holger L. Meyerheim, Marc de Boissieu, Stefan Förster, Wolf Widdra   +6 more
doaj   +1 more source

Growth Modes of Quasicrystals [PDF]

Physical Review Letters, 2014
The growth of quasicrystals, i.e., aperiodic structures with long-range order, seeded from the melt is investigated using a dynamical phase field crystal model. Depending on the thermodynamic conditions, two different growth modes are detected, namely defect-free growth of the stable quasicrystal and a mode dominated by phasonic flips which are ...
Achim, C. V., Schmiedeberg, M., Löwen, H.   +2 more
openaire   +3 more sources