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相关论文: Phason space analysis and structure modeling of 10…

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We present new evidence supporting the quasi-unit cell description of the $Al_{72}Ni_{20}Co_{8}$ decagonal quasicrystal which shows that the solid is composed of repeating, overlapping decagonal cluster columns with broken 10-fold symmetry.…

凝聚态物理 · 物理学 2009-10-31 E. Abe , K. Saitoh , H. Takakura , A. P. Tsai , P. J. Steinhardt , H. -C. Jeong

Single cluster covering approach provides a plausible mechanism for the formation and stability of octagonal and decagonal quasiperiodic structures. For dodecagonal quasiperiodic pattern such a single cluster covering scheme is still…

其他凝聚态物理 · 物理学 2015-06-11 Longguang Liao , Zexian Cao

It has recently been argued that individual 1D quasicrystals can be ascribed 2D topological quantum numbers and a corresponding set of topologically protected edge modes. Here, we demonstrate the equivalence of such 1D quasicrystals to a…

强关联电子 · 物理学 2015-08-31 Felix Flicker , Jasper van Wezel

The phase-field-crystal model is used to access the structure and thermodynamics of interfaces between two coexisting liquid crystalline phases in two spatial dimensions. Depending on the model parameters there is a variety of possible…

软凝聚态物质 · 物理学 2014-01-28 Simon Praetorius , Axel Voigt , Raphael Wittkowski , Hartmut Löwen

The nanostructure of hydrogenated amorphous silicon (a Si:H) is studied by a combination of small-angle X-ray (SAXS) and neutron scattering (SANS) with a spatial resolution of 0.8 nm. The a-Si:H materials were deposited using a range of…

材料科学 · 物理学 2020-11-04 Eike Gericke , Jimmy Melskens , Robert Wendt , Markus Wollgarten , Armin Hoell , Klaus Lips

The scaling of friction with the contact size $A$ and (in)commensurabilty of nanoscopic and mesoscopic crystals on a regular substrate are investigated analytically for triangular nanocrystals on hexagonal substrates. The crystals are…

介观与纳米尺度物理 · 物理学 2012-09-10 Astrid S. de Wijn

The palladium-iron-arsenides Ca10(Fe1-xPdxAs)10(Pd3As8) were synthesized by solid state methods and characterized by X-ray powder and single crystal diffraction. The triclinic crystal structure (space group P-1) is isotypic to the homologue…

超导电性 · 物理学 2014-10-29 C. Hieke , J. Lippmann , T. Stürzer , G. M. Friederichs , F. Nitsche , F. Winter , R. Pöttgen , D. Johrendt

We investigate the liquid state structure of the two-dimensional (2D) model introduced by Barkan et al. [Phys. Rev. Lett. 113, 098304 (2014)], which exhibits quasicrystalline and other unusual solid phases, focussing on the radial…

软凝聚态物质 · 物理学 2018-09-03 M. C. Walters , P. Subramanian , A. J. Archer , R. Evans

Ba(Fe$_{1/2}$Nb$_{1/2}$)O$_3$ (BFN) ceramics are considered to be promising for technological applications owing to their high dielectric constant over a wide range of temperatures. However, there exists considerable discrepancy over the…

Motivated by recent experimental findings, we investigate the possible occurrence and characteristics of quasicrystalline order in two-dimensional mixtures of point dipoles with two sorts of dipole moments. Despite the fact that the dipolar…

其他凝聚态物理 · 物理学 2009-11-10 Falk Scheffler , Philipp Maass , Johannes Roth , Holger Stark

Quantum states of quasiparticles in solids are dictated by symmetry. Thus, a discovery of unconventional symmetry can provide a new opportunity to reach a novel quantum state. Recently, Dirac and Weyl electrons have been observed in…

The theory of magnetic symmetry in quasicrystals, described in a companion paper [cond-mat/0304669], is used to enumerate all 3-dimensional octagonal spin point groups and spin space-group types, and calculate the resulting selection rules…

材料科学 · 物理学 2020-11-10 Shahar Even-Dar Mandel , Ron Lifshitz

We study topological states of matter in quasicrystals, which do not rely on crystalline orders. In the absence of a bandstructure description and spin-orbit coupling, we show that a three-dimensional quasicrystal can nevertheless form a…

介观与纳米尺度物理 · 物理学 2024-10-29 Zhu-Guang Chen , Cunzhong Lou , Kaige Hu , Lih-King Lim

Park {\it et al.} have reported eight times greater atomic-scale friction in the periodic than in the quasiperiodic direction on the two-fold face of a decagonal Al-Ni-Co quasicrystal. We present results of molecular-dynamics simulations…

Tiling models can reveal unexpected ways in which local constraints give rise to exotic long-range spatial structure. The recently discovered Hat monotile (and its mirror image) has been shown to be aperiodic~[Smith et al., arXiv:2303.10798…

材料科学 · 物理学 2023-12-13 Joshua E. S. Socolar

We show that the previously predicted Fermion particle that has no analogue in the standard model of particle theory - the cubically dispersed Dirac semimetal (CDSM) - is realized in a specific, stable solid state system that has been made…

材料科学 · 物理学 2017-05-17 Qihang Liu , Alex Zunger

It was shown that anomalous resistivity behavior of the $Cu-Mn-Al$ ribbons is explained by the s-d interaction between conduction electrons and the clustered Mn atoms. While nuclear magnetic resonance measurements show the antiferromagnetic…

材料科学 · 物理学 2018-04-13 Matej Hudak , Jana Tothova , Ondrej Hudak

For a three dimensional system we answer two questions, how simple a particle system might be to show the quasicrystal order and, what system features are the most important for quasicrystal formation? One-component system of particles with…

软凝聚态物质 · 物理学 2015-08-27 R. E. Ryltsev , B. A. Klumov , N. M. Chtchelkatchev

Quasicrystals possess long-range order but lack the translational symmetry of crystalline solids. In solid state physics, periodicity is one of the fundamental properties that prescribes the electronic band structure in crystals. In the…

介观与纳米尺度物理 · 物理学 2017-07-21 Laura C. Collins , Thomas G. Witte , Rochelle Silverman , David B. Green , Kenjiro K. Gomes

We study the three-dimensional structure formation when atoms are deposited onto a substrate with a decagonal quasicrystalline order. Molecular-dynamicscalculations show that the adsorbate layer consists of ordered nano-scale domains with…

材料科学 · 物理学 2007-11-29 Muhittin Mungan , Yves Weisskopf , Mehmet Erbudak