As first demonstrated by Tang and Cohen in chiral optics, the asymmetry in the rate of electromagnetic energy absorption between left and right enantiomers is determined by an optical chirality density. Here, we demonstrate that this effect can exist in magnetic spin systems. By constructing a formal analogy with electrodynamics, we show that in antiferromagnets with broken chiral symmetry, the asymmetry in local spin-wave energy absorption is proportional to a spin-wave chirality density, which is a direct counterpart of optical zilch. We propose that injection of a pure spin current into an antiferromagnet may serve as a chiral symmetry breaking mechanism, since its effect in the spin-wave approximation can be expressed in terms of additional Lifshitz invariants. We use linear response theory to show that the spin current induces a nonequilibrium spin-wave chirality density.
Charge current is converted into chiral spin current for energy harvesting.
Quantum Transport Enhancement by Time-Reversal Symmetry Breaking
https://www.nature.com › Scientific Reports › Articles
Aug 6, 2013 - Here we show how breaking time-reversal symmetry of the unitary ... This opens new prospects for more efficient methods to transport energy and information. ... study continuous time “chiral” quantum walks whose dynamics break TRS. ... in Eq. (2) can be expressed in terms of the spin-half Pauli matrices: .Workshop Chiral Photonics 2017 - Max Planck Institute for the Science ...
www.mpl.mpg.de/fileadmin/marquardt/Program_final.pdf
The Chiral Anomaly
Our results reveal the anomalous thermoelectric property of Weyl fermions and provide insight into the chiral anomaly.The Chiral Quantum Walk - secret of photosynthesis energy harvesting
And secret of nonwestern alchemy meditation!!
Semiconducting Single-Walled Carbon Nanotubes in Solar Energy ...
pubs.acs.org/doi/pdf/10.1021/acsenergylett.7b00228
by JL Blackburn - 2017 - Cited by 1 - Related articles
May 31, 2017 - chiral indices”assigned to each particular SWCNT species. Many applications ... When analyzing their utility in solar energy harvesting, it is important to .... spin, symmetry, and momentum selection rules associated with both the .... generating inks and thin films that can harvest energy in various regions of ...Harvesting temperature fluctuations as electrical energy using ...
pubs.rsc.org/en/content/articlepdf/2015/EE/C5EE02219C
Sep 28, 2015 - temperature fluctuations to spin a magnetic rotor to a peak torsional rotation speed of ... over the last fifty years on developing energy harvesters based .... homochiral (ZZ or SS) depending upon the relative chirality of ... 1c, symmetry break- .... fiber retwist, where both are normalized by the time between.Low-frequency mechanical energy harvesting getting ready for takeoff ...
https://www.innovationtoronto.com/.../low-frequency-mechanical-energy-harvesting-...
Dec 16, 2016 - Low-frequency mechanical energy harvesting could provide as ... Devices to harvest ambient mechanical energy to convert to ... At the same time,
a built-in potential that opposes ion diffusion is established until
equilibrium is reached. ...... SWARMs, swimming pool, swimming robot, symmetry breaking ...
A new advanced energy harvesting system based on a temperature ...
https://www.innovationtoronto.com/.../a-new-advanced-energy-harvesting-system-bas...
Spin resonance was found to occur when the base oscillatory frequency was twice the value of the coupled frequency.
here
Scientists observe gravitational anomaly on Earth
"For the first time, we have experimentally observed this fundamental quantum anomaly on Earth which is extremely important towards our understanding of the universe," said Dr. Johannes Gooth, an IBM Research scientist and lead author of the paper. "We can now build novel solid-state devices based on this anomaly that have never been considered before to potentially circumvent some of the problems inherent in classical electronic devices, such as transistors."
New calculations, using in part the methods of string theory, showed that this gravitational anomaly is also responsible for producing a current if the material is heated up at the same time a magnetic field is applied.
Read more at: https://phys.org/news/2017-07-scientists-gravitational-anomaly-earth_1.html#jCp
"This is an incredibly exciting discovery. We can clearly conclude that the same breaking of symmetry can be observed in any physical system, whether it occurred at the beginning of the universe or is happening today, right here on Earth," said Prof. Dr. Karl Landsteiner, a string theorist at the Instituto de Fisica Teorica UAM/CSIC and co-author of the paper.
IBM scientists predict this discovery will open up a rush of new developments around sensors, switches and thermoelectric coolers or energy-harvesting devices, for improved power consumption.
an underlying curved space-time provides a distinct contribution to a chiral imbalance, an effect known as the mixed axial–gravitational anomaly, but this anomaly has yet to be confirmed experimentally. However, the presence of a mixed gauge–gravitational anomaly has recently been tied to thermoelectrical transport in a magnetic field, even in flat space-time, suggesting that such types of mixed anomaly could be experimentally probed in condensed matter systems known as Weyl semimetals."
herethe altered electronic response to polarized light allows for the manipulation of the charge order by addressing its chirality.
3.1. Optical Tweezers and Cold Atom TrappingThe interaction of light with helicoid wavefronts with a microscopic dielectric particleresults in a transfer of angular momentum to the particle. This causes particle to rotatearound the beam axis[5]. The optical tweezers use the gradient force that is due to thetightly focused beam of light to trap dielectric particles. The modes with well definedOAM can be used in optical tweezers, and creating optically driven micromachines, sincethe rotation of the particles acts as a microfluidic pump[12].
Orbital Angular Momentum of Light (PDF Download Available). Available from: https://www.researchgate.net/
Pinning of longitudinal phonons in holographic helical crystals - arXiv
https://arxiv.org/pdf/1708.08306
by T Andrade - 2017 - Cited by 2
Aug 28, 2017 - waves, spin density waves, various intertwined orders. ... chiral symmetry breaking, being a familiar example of this effect). .... lattice amplitude, so our present analysis should indeed be adequate to shed light on the ...... Donos, J. P. Gauntlett and C. Pantelidou, Spatially modulated instabilities of magnetic.Black hole elasticity and gapped transverse phonons in holography
L Alberte, M Ammon, M Baggioli, A Jiménez… - arXiv preprint arXiv …, 2017 - arxiv.org
Abstract: We study the elastic response of planar black hole (BH) solutions in a simple class of holographic models with broken translational invariance. We compute the transverse
quasi-normal mode spectrum and determine the propagation speed of the lowest energy
Spintronics
Molecular spintronics (spin + electronics), which aims to exploit both the spin degree of freedom and the electron charge in molecular devices, has recently received massive attention. Our recent experiments on molecular spintronics employ chiral molecules which have the unexpected property of acting as spin filters, by way of an effect we call “chiral-induced spin selectivity” (CISS).
Chiral Induced Spin Selectivity (CISS).(4, 5) The studies described here use a chiral linker molecule between the redox moiety and a ferromagnetic electrode to provide a spin filter for the electrons, via the CISS effect, and they combine it with an externally applied static magnetic field that switches the direction of magnetization of the ferromagnetic electrode to unveil the spin selectivity in the electron transfer process.
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