Chiral phonon spin coupling
WebAbstract. MnBi 2 Te 4 represents a new class of magnetic topological insulators in which novel quantum phases emerge at temperatures higher than those found in magnetically doped thin films. Here, we investigate how couplings between electron, spin, and lattice are manifested in the phonon spectra of few-septuple-layer thick MnBi 2 Te 4. Webarxiv.org
Chiral phonon spin coupling
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WebAug 14, 2024 · Footnotes. 1. The angular momentum transfer necessary to flip the excitonic spin is Δ Jz =± 2 because both the electron and the hole should change their spin. phonons can only exchange a unit of angular momentum but because of the C3 symmetry of the lattice, the angular momentum space is defined modulo 3 and this change Δ Jz =± 1 … WebApr 8, 2024 · Chiral spintronics deals with not only the generation of the spin currents but the acting of spin currents on chiral structures, such as chiral spin–orbit torque.
WebDec 30, 2024 · Elastic Valley Spin Controlled Chiral Coupling in Topological Valley Phononic Crystals Phys Rev Lett. 2024 Dec 30;129(27) :275501. doi ... We unveil the … WebSep 25, 2024 · However, lattice dynamics, chirality of phonons, and spin–phonon coupling in this material, which set the foundation for these exotic phenomena, have remained unexplored. Here, the first …
WebMar 9, 2024 · At the 2D limit, hexagonal systems such as monolayer transition metal dichalcogenides (TMDs) and graphene exhibit unique coupled spin and momentum-valley physics (valley pseudospin) owing to broken spatial inversion symmetry and strong spin-orbit coupling. Circularly polarized light provides the means for pseudospin-selective … WebJul 20, 2024 · A large κ xy signal due to phonons was observed in multiferroic materials such as Fe 2 Mo 3 O 8 (ref. 15), in which it was attributed to a coupling of phonons to spins. A spin-phonon coupling ...
WebDec 10, 2024 · The strong single exciton–phonon coupling in QDs of two-dimensional materials shown here can serve as a source of single, CPs. ... Chiral-phonon-activated spin Seebeck effect Kyunghoon Kim;
WebHere, we report the observation of local elastic valley spin as well as the hidden elastic spin-valley locking mechanism overlooked before. We demonstrate that the selective one-way routing of valley phonon states along the topological interface can be reversed by imposing the elastic spin meta-source at different interface locations with ... culligan of troy nyWebNov 15, 2024 · In Table 2 we present the computed spin–phonon coupling coefficients, at the Γ 4 g ground state, for the phonon modes at different high-symmetry q-points.Interestingly, at the Γ-point the largest value of 4.90 cm −1 are observed for the Γ 4 −.At the X-point it can be observed that X 5 + shows a value of −2.22 cm −1.Finally, at … culligan of tucson in tucson azWebSep 16, 2024 · Recently, the spin-dependent effects in chiral materials are being intensively explored due to requirements of fundamental research and technological … east from the west kjvWebFeb 4, 2024 · In chiral structures, chirality-generated orbital angular momentum can act as a good medium to realize coupling between circularly polarized photons and spin … culligan of ventura loginWebJan 1, 2024 · The chiral phonon–spin coupling is further confirmed by phonon Zeeman effect. The existence of the chiral phonons and their interplay with spins along with our … east from the beastWebDec 11, 2024 · 1. The spin on your shots is out of control and has got to be stopped! 2. Your current low spin golf balls need replacing. You just want to get better ones this time … culligan of troyWebDec 30, 2024 · Elastic Valley Spin Controlled Chiral Coupling in Topological Valley Phononic Crystals Phys Rev Lett. 2024 Dec 30;129(27) :275501. doi ... We unveil the physical mechanism of selective directionality as the elastic spin controlled chiral coupling of valley phonon states, through both analytical theory and experimental measurement … east friesland salvia plant