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Order to disorder in quasiperiodic composites

11:31 15 junio in Artículos por Website

The Moiré system introduced above is parameterized by r > 0 and 0 ≤ θ < 2π, which generates a diverse assortment of periodic (“finite period”) and quasiperiodic (“infinte period”) microgeometries. To numerically calculate mathematical and physical quantities, we consider finite subsets of these systems as RLC impedance networks. Different...

Ladder of Eckhaus instabilities and parametric conversion in chi(2) microresonators

11:32 11 junio in Artículos por Website

Model and classification of OPO regimesFrequencies of the modes in high-finesse resonators are rigidly linked to the quantised set of the wavenumbers. Therefore, the step in frequency also implies the abrupt change of the spatial period, as it happens in the Eckhaus instability scenario....

Layer-dependent magnetic phase diagram in FenGeTe2 (3 ≤ n ≤ 7) ultrathin films

14:38 10 junio in Artículos por Website

Coexistence of localized and itinerant magnetism in 2D Fe3GeTe2The atomic configuration of 2D Fe3GeTe2 is shown in Fig. 1. Each Fe3GeTe2 unit has a thickness of five atomic layers. Clearly, there are two types of Fe atoms with different coordination environments, namely, trivalent iron (Fe3+)...

Extending the time of coherent optical response in ensemble of singly-charged InGaAs quantum dots

11:31 10 junio in Artículos por Website

Coherent optical response in (In,Ga)As QDsWe study n-doped (In,Ga)As quantum dots structures embedded into the microcavity with GaAs/AlAs distributed Bragg reflectors (for details see the “Methods” section). The QD emission is represented by the photoluminescence (PL) spectrum in Fig. 1a which was measured from the...