Results 121 to 130 of about 1,288,266 (300)

Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α‐Quartz

open access: yesAdvanced Materials, EarlyView.
Chiral acoustic phonons in α‐quartz are probed via Brillouin light scattering, exploiting the photon's helicity and the crystal's handedness. The interaction obeys a selection rule arising from pseudoangular momentum conservation, enabling direct optical access to phonon chirality in nonsymmorphic crystals.
Changsoo Kim   +8 more
wiley   +1 more source

The fractional quantum Hall effect in infinite layer systems

open access: yes, 2000
Stacked two dimensional electron systems in transverse magnetic fields exhibit three dimensional fractional quantum Hall phases. We analyze the simplest such phases and find novel bulk properties, e.g., irrational braiding.
D. L. Cox   +14 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

SOSIALISASI CALON INSTRUKTUR POS PAUD DI KELURAHAN SAMPANGAN KECAMATAN GAJAH MUNGKUR SEMARANG

open access: yesE-Dimas, 2011
?é?á Nowadays PAUD/ pre-school education is really important and urgent to be conducted in any villages or kampongs. Sampangan village Gajah Mungkur Semarang is one the villages that needs to be explored and held by the team of community service ...
Munawir IKIP PGRI Semarang   +4 more
doaj   +1 more source

Non‐Destructive Laser Nanopatterning of Superconducting Heterostructures in Topological Sn Thin Films

open access: yesAdvanced Materials, EarlyView.
We demonstrate successful fabrication of high‐quality α‐Sn/β‐Sn planar nanostructures with arbitrary shapes by focused laser irradiation on topological Dirac semimetal α‐Sn thin films. The irradiated regions transform into atomically smooth, superconducting β‐Sn with a critical temperature of 3.7 K.
Le Duc Anh   +5 more
wiley   +1 more source

Optimal monetary policy in an economy with sticky nominal wages [PDF]

open access: yes
In this article, Evan Koenig derives the optimal monetary policy rule for an economy with contractual wage agreements. The optimal rule has the monetary authority target a weighted average of aggregate output and the price level.
Evan F. Koenig
core  

Multi-band effect in the noncentrosymmetric superconductors Mg_{12-\delta}Ir_{19}B_{16} revealed by Hall effect and magnetoresistance measurements

open access: yes, 2010
We report the longitudinal resistivity and Hall effect measurements on the noncentrosymmetric superconducting Mg$_{12-\delta}$Ir$_{19}$B$_{16}$ samples with different critical transition temperatures.
Mu, Gang, Wen, Hai-Hu, Yang, Huan
core   +1 more source

Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics

open access: yesAdvanced Materials, EarlyView.
Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón   +6 more
wiley   +1 more source

Efficient Prediction of Superlattice and Anomalous Miniband Topology from Quantum Geometry

open access: yesPhysical Review X
Two-dimensional materials subject to long-wavelength modulations have emerged as novel platforms to study topological and correlated quantum phases. In this article, we develop a versatile and computationally inexpensive method to predict the topological
Valentin Crépel, Jennifer Cano
doaj   +1 more source

Quasi-Fermi Distribution and Resonant Tunneling of Quasiparticles with Fractional Charges

open access: yes, 1993
We study the resonant tunneling of quasiparticles through an impurity between the edges of a Fractional Quantum Hall sample. We show that the one-particle momentum distribution of fractionally charged edge quasiparticles has a quasi-Fermi character.
A. Simmons   +17 more
core   +1 more source

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