Articles with "momentum" as a keyword



Through the Lens of A Momentum Microscope: Viewing Light-Induced Quantum Phenomena in Two-Dimensional Materials.

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Published in 2022 at "Advanced materials"

DOI: 10.1002/adma.202204120

Abstract: Van der Waals (vdW) materials at their two-dimensional limit are diverse, flexible, and unique laboratories to study fundamental quantum phenomena and their future applications. Their novel properties rely on their pronounced Coulomb interactions, variety of… read more here.

Keywords: light induced; two dimensional; dimensional materials; momentum ... See more keywords

Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α-Quartz.

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Published in 2025 at "Advanced materials"

DOI: 10.1002/adma.202511289

Abstract: While the linear motion of phonons is widely understood as arising from the translational symmetry of crystal lattices, recent studies have revealed the intrinsic rotational motion of phonons in condensed matter with discrete rotational symmetry.… read more here.

Keywords: phonon; pseudoangular momentum; conservation pseudoangular; chiral acoustic ... See more keywords

Coupling‐Mediated Selective Spin‐to‐Plasmonic‐Orbital Angular Momentum Conversion

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Published in 2019 at "Advanced Optical Materials"

DOI: 10.1002/adom.201900713

Abstract: Orbital angular momentum (OAM) has been recently introduced to plasmonics for generating plasmonic vortices with a helical wavefront, opening avenues for exotic on‐chip applications such as quantum information processing and communications. In previous demonstrations, carefully… read more here.

Keywords: angular momentum; plasmonic vortices; conversion; spin ... See more keywords

Step Function in Momentum Space by a Metagrating

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Published in 2024 at "Advanced Optical Materials"

DOI: 10.1002/adom.202500265

Abstract: Metasurface research has shown significant potential for controlling the polarization, amplitude, phase, and propagation direction of light. Nevertheless, control over the angular response of incident light remains a long‐standing problem. In this work, the potential… read more here.

Keywords: step function; momentum; momentum space;

Interfacial Momentum Matching for Ohmic Van Der Waals Contact Construction

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Published in 2024 at "Advanced Electronic Materials"

DOI: 10.1002/aelm.202400397

Abstract: The difficulty of achieving ohmic contacts is a long‐standing challenge for the development and integration of devices based on 2D materials, due to the large mismatch between their electronic properties and those of both traditional… read more here.

Keywords: van der; momentum; der waals; momentum matching ... See more keywords

A variance‐reduced distributed stochastic momentum algorithm over directed networks

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Published in 2025 at "Asian Journal of Control"

DOI: 10.1002/asjc.3775

Abstract: The distributed optimization to minimize a smooth and strongly convex function is considered, in which the function can be described as the finite sum of all local objective functions over directed networks. A variance‐reduced distributed… read more here.

Keywords: variance; momentum; reduced distributed; directed networks ... See more keywords

Predicting Equity Premium: A New Momentum Indicator Selection Strategy With Machine Learning

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Published in 2024 at "Journal of Forecasting"

DOI: 10.1002/for.3200

Abstract: We propose a new momentum‐determined indicator‐switching (N‐MDIS) strategy, harnessing the power of machine learning to enhance the accuracy of equity premium prediction. Specifically, we re‐examine the regime‐dependent feature of univariate predictive regression relative to the… read more here.

Keywords: equity premium; machine learning; momentum; strategy ... See more keywords

How about selling commodity futures losers?

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Published in 2019 at "Journal of Futures Markets"

DOI: 10.1002/fut.22051

Abstract: This paper explores the benefits of extending the investment universe to commodity futures, from the perspective of momentum traders. We find that the growth-optimal portfolio includes negative (positive) weights on commodity futures losers (stock winners).… read more here.

Keywords: commodity futures; momentum; selling commodity; commodity ... See more keywords

Conserving the linear momentum in stochastic dynamics: Dissipative particle dynamics as a general strategy to achieve local thermostatization in molecular dynamics simulations

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Published in 2017 at "Journal of Computational Chemistry"

DOI: 10.1002/jcc.24677

Abstract: Stochastic dynamics is a widely employed strategy to achieve local thermostatization in molecular dynamics simulation studies; however, it suffers from an inherent violation of momentum conservation. Although this short‐coming has little impact on structural and… read more here.

Keywords: achieve local; stochastic dynamics; thermostatization; momentum ... See more keywords

Discretization of generalized Coriolis and friction terms on the deformed hexagonal C‐grid

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Published in 2018 at "Quarterly Journal of the Royal Meteorological Society"

DOI: 10.1002/qj.3294

Abstract: The contribution discusses the generalized Coriolis and friction terms on the hexagonal C-grid from two perspectives: (i) within the linearized discretized momentum equations on an equilateral grid, and (ii) as nonlinear terms on a distorted… read more here.

Keywords: hexagonal grid; coriolis friction; generalized coriolis; friction terms ... See more keywords

Momentum dispersion and mass resolution of magnetic sector instruments for surface analysis

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Published in 2019 at "Surface and Interface Analysis"

DOI: 10.1002/sia.6635

Abstract: The momentum‐dependent dispersion of ion trajectories in a homogeneous magnetic sector field is derived by a trigonometric method. Contrary to the often used transfer matrix technique, the results are not restricted to small momentum differences.… read more here.

Keywords: mass; magnetic sector; resolution magnetic; momentum ... See more keywords