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 … WebIn this talk, I will first briefly introduce the discovery of chiral phonons in two-dimensional (2D) semiconductors, which exhibit spin-valley locking and chiral electron-phonon coupling. I will then discuss the general properties of chiral phonons originating from time-reversal symmetry breaking, and give an example on the optical control and ...
Elastic Valley Spin Controlled Chiral Coupling in Topological …
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 physical mechanism of selective directionality as the elastic spin controlled chiral coupling of valley phonon states, through both analytical theory and experimental measurement … WebFeb 3, 2024 · The chiral phonon-spin coupling is further confirmed by phonon Zeeman effects. The existence of the chiral phonons and their interplay with spins along with … incident in new milton today
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WebDiscovered in high-energy physics, the chiral anomaly has recently made way to materials science by virtue of Weyl semimetals (WSM). Thus far, the main efforts to probe the chiral anomaly in WSM have concentrated on el… WebFeb 15, 2024 · The chiral spin-phonon coupling might be relevant to explain the large experimentally observed phonon magnetic moments due to chiral phonons in various materials [10] [11] [12][13]. Furthermore ... WebJan 28, 2024 · Chiral symmetry breaking of phonons plays an essential role in emergent quantum phenomena owing to its strong coupling to spin degree of freedom. However, direct experimental evidence of the chiral phonon–spin coupling is lacking. inbodyservice.com