Results 1 to 10 of about 9,264 (254)

What is the relativistic spin operator?

New Journal of Physics, 2014
Although the spin is regarded as a fundamental property of the electron, there is no universally accepted spin operator within the framework of relativistic quantum mechanics.
Heiko Bauke, Sven Ahrens, Christoph H Keitel, Rainer Grobe   +3 more
doaj   +1 more source

Stable optical lateral forces from inhomogeneities of the spin angular momentum. [PDF]

Sci Adv, 2022
Shi Y, Zhu T, Liu J, Tsai DP, Zhang H, Wang S, Chan CT, Wu PC, Zayats AV, Nori F, Liu AQ.   +10 more
europepmc   +1 more source

Polarization-Addressable Optical Movement of Plasmonic Nanoparticles and Hotspot Spin Vortices

Nanomaterials
Spin–orbit coupling in nanoscale optical fields leads to the emergence of a nontrivial spin angular momentum component, transverse to the orbital momentum.
Sergio Balestrieri, Silvia Romano, Mario Iodice, Giuseppe Coppola, Gianluigi Zito   +4 more
doaj   +1 more source

Nonlinear Optical Response of a Plasmonic Nanoantenna to Circularly Polarized Light: Rotation of Multipolar Charge Density and Near-Field Spin Angular Momentum Inversion. [PDF]

ACS Photonics, 2023
Quijada M, Babaze A, Aizpurua J, Borisov AG.   +3 more
europepmc   +1 more source

Four no-go theorems on the existence of spin and orbital angular momentum of massless bosons

SciPost Physics
The past decades have seen substantial interest in the so-called orbital angular momentum (OAM) of light, driven largely by its diverse range of applications.
Eric Palmerduca, Hong Qin
doaj   +1 more source

Orbital angular momentum conservation in Brillouin light scattering within a ferromagnetic sphere

New Journal of Physics, 2018
Magnetostatic modes supported by a ferromagnetic sphere have been known as the Walker modes, each of which possesses an orbital angular momentum as well as a spin angular momentum along a static magnetic field.
A Osada, A Gloppe, Y Nakamura, K Usami
doaj   +1 more source

Gap-plasmon-driven spin angular momentum selection of chiral metasurfaces for intensity-tunable metaholography working at visible frequencies. [PDF]

Nanophotonics, 2022
Yang Y, Kim H, Badloe T, Rho J.
europepmc   +1 more source

Orbital chirality of light in few-mode step-index optical fibers

APL Photonics
A physical system is considered chiral when it can be distinguished from its mirror image, regardless of the applied translation and rotation. An electromagnetic wave can be chiral through its two essential forms of angular momenta: spin and orbital ...
Karolina Stefańska, Edouard Hertz, Karol Tarnowski, Bertrand Kibler, Pierre Béjot   +4 more
doaj   +1 more source

Justifying the naive partonic sum rule for proton spin

Physics Letters B, 2015
We provide a theoretical basis for understanding the spin structure of the proton in terms of the spin and orbital angular momenta of free quarks and gluons in Feynman's parton picture.
Xiangdong Ji, Jian-Hui Zhang, Yong Zhao
doaj   +1 more source

Harnessing of inhomogeneously polarized Hermite-Gaussian vector beams to manage the 3D spin angular momentum density distribution. [PDF]

Nanophotonics, 2022
Khonina SN, Porfirev AP.
europepmc   +1 more source