Results 61 to 70 of about 145,179 (287)
Angular momentum of a strongly focussed Gaussian beam [PDF]
, 2004 A circularly polarized rotationally symmetric paraxial laser beams carries hbar angular momentum per photon as spin. Focussing the beam with a rotationally symmetric lens cannot change this angular momentum flux, yet the focussed beam must have spin less
Heckenberg, Norman R. +2 more
core +1 more source
Advanced Materials, EarlyView.AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll +19 more
wiley +1 more source
OAM-inspired new optics: the angular metalens
Light: Science & Applications, 2021 Analogous to the behavior of a common converging lens for the input of tilted waves, a recent publication suggests a new optical element with an azimuthal-quadratic phase profile for the focusing of orbital angular momentum beams at distinct angular ...
Gianluca Ruffato
doaj +1 more source
Bump-on-tail instability of twisted excitations in rotating cold atomic clouds
, 2015 We develop a kinetic theory for twisted density waves (phonons), carrying a finite amount of orbital angular momentum, in large magneto optical traps, where the collective processes due to the exchange of scattered photons are considered.
Mendonça, J. T. +2 more
core +1 more source
Quantum orbital angular momentum of elliptically-symmetric light [PDF]
, 2012 We present a quantum mechanical analysis of the orbital angular momentum of a class of recently discovered elliptically-symmetric stable light fields --- the so-called Ince-Gauss modes.
Anton Zeilinger +5 more
core +3 more sources
Signature of the Gluon Orbital Angular Momentum
Physical Review Letters, 2022 Version accepted for publication in Physical Review ...
Shohini Bhattacharya +2 more
openaire +4 more sources
Advanced Materials, EarlyView.Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano +18 more
wiley +1 more source
A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments
Advanced Materials, EarlyView.The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal +14 more
wiley +1 more source
Rotating light, OAM paradox and relativistic complex scalar field
, 2008 Recent studies show that the angular momentum, both spin and orbital, of rotating light beams possesses counter-intuitive characteristics. We present a new approach to the question of orbital angular momentum of light based on the complex massless scalar
Aitchison I J R +11 more
core +1 more source
Orbital-Angular-Momentum-Controlled Hybrid Nanowire Circuit
Nano Letters, 2021 Plasmonic nanostructures can enable compact multiplexing of the orbital angular momentum (OAM) of light; however, strong dissipation of the highly localized OAM-distinct plasmonic fields in the near-field region hinders on-chip OAM transmission and processing.
Haoran Ren +6 more
openaire +4 more sources