A comparative study of the spin-orbit interactions in Pancharatnam-Berry phase elements and in normal incidence of a light beam at a sharp interface

2019 ◽  
Author(s):  
Huiling Luo ◽  
Xiaohui Ling ◽  
Xinxing Zhou
Keyword(s):  
Comparative Study ◽  
Light Beam ◽  
Berry Phase ◽  
Normal Incidence ◽  
Sharp Interface ◽  
Spin Orbit ◽  
Spin Orbit Interactions

scholarly journals Spin-orbit interaction of a light beam under normal incidence at a sharp interface and its enhancement

2020 ◽  
Vol 69 (3) ◽  
pp. 034202
Author(s):  
Hui-Ling Luo ◽  
Xiao-Hui Ling ◽  
Xin-Xing Zhou ◽  
Hai-Lu Luo
Keyword(s):  
Light Beam ◽  
Normal Incidence ◽  
Orbit Interaction ◽  
Sharp Interface ◽  
Spin Orbit ◽  
Spin Orbit Interaction

scholarly journals Plasmonic metasurfaces manipulating the two spin components from spin–orbit interactions of light with lattice field generations

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ruirui Zhang ◽  
Manna Gu ◽  
Rui Sun ◽  
Xiangyu Zeng ◽  
Yuqin Zhang ◽  
...  
Keyword(s):  
Berry Phase ◽  
Incident Light ◽  
Polarized Light ◽  
Polarization Degree ◽  
Spin Orbit ◽  
Optical Fields ◽  
Circularly Polarized Light ◽  
Dynamic Phase ◽  
Spin Orbit Interactions ◽  
Opposite Helicity

Abstract Artificial nanostructures in metasurfaces induce strong spin–orbit interactions (SOIs), by which incident circularly polarized light can be transformed into two opposite spin components. The component with an opposite helicity to the incident light acquires a geometric phase and is used to realize the versatile functions of the metasurfaces; however, the other component, with an identical helicity, is often neglected as a diffused background. Here, by simultaneously manipulating the two spin components originating from the SOI in plasmonic metasurfaces, independent wavefields in the primary and converted spin channels are achieved; the wavefield in the primary channel is controlled by tailoring the dynamic phase, and that in the converted channel is regulated by designing the Pancharatnam–Berry phase in concurrence with the dynamic phase. The scheme is realized by generating optical lattice fields with different topologies in two spin channels, with the metasurfaces composed of metal nanoslits within six round-apertures mimicking the multi-beam interference. This study demonstrates independent optical fields in a dual-spin channel based on the SOI effect in the metasurface, which provides a higher polarization degree of freedom to modify optical properties at the subwavelength scale.

Minimal length, Berry phase and spin-orbit interactions

2021 ◽  
Vol 96 (5) ◽  
pp. 055303
Author(s):  
S Aghababaei ◽  
H Moradpour ◽  
G Rezaei ◽  
S Khorshidian
Keyword(s):  
Berry Phase ◽  
Minimal Length ◽  
Spin Orbit ◽  
Spin Orbit Interactions

Spin generation and manipulation based on spin-orbit interaction in semiconductors

2017 ◽  
Author(s):  
J. Nitta
Keyword(s):  
Magnetic Field ◽  
Orbit Interaction ◽  
Degree Of Freedom ◽  
Effective Magnetic Field ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
Spin Degree ◽  
Dimensional Electron Gas ◽  
Spin Orbit Interactions ◽  
Electrical Generation

This chapter focuses on the electron spin degree of freedom in semiconductor spintronics. In particular, the electrostatic control of the spin degree of freedom is an advantageous technology over metal-based spintronics. Spin–orbit interaction (SOI), which gives rise to an effective magnetic field. The essence of SOI is that the moving electrons in an electric field feel an effective magnetic field even without any external magnetic field. Rashba spin–orbit interaction is important since the strength is controlled by the gate voltage on top of the semiconductor’s two-dimensional electron gas. By utilizing the effective magnetic field induced by the SOI, spin generation and manipulation are possible by electrostatic ways. The origin of spin-orbit interactions in semiconductors and the electrical generation and manipulation of spins by electrical means are discussed. Long spin coherence is achieved by special spin helix state where both strengths of Rashba and Dresselhaus SOI are equal.

scholarly journals Intersystem crossing processes in the 2CzPN emitter: a DFT/MRCI study including vibrational spin–orbit interactions

2021 ◽  
Vol 23 (5) ◽  
pp. 3668-3678
Author(s):  
Angela Rodriguez-Serrano ◽  
Fabian Dinkelbach ◽  
Christel M. Marian
Keyword(s):  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Intersystem Crossing ◽  
Spin Orbit ◽  
Spin Orbit Interactions

Multireference quantum chemical calculations were performed in order to investigate the (reverse) intersystem crossing ((R)ISC) mechanisms of 4,5-di(9H-carbazol-9-yl)-phthalonitrile (2CzPN).

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