ICTS:29173

Video URL

CT- Giant effective magnetic moments of chiral phonons

CT- Giant effective magnetic moments of chiral phonons

(2024). CT- Giant effective magnetic moments of chiral phonons. SciVideos. https://youtube.com/live/yJQ0AMg3N5E

CT- Giant effective magnetic moments of chiral phonons. SciVideos, Jul. 24, 2024, https://youtube.com/live/yJQ0AMg3N5E 

          @misc{ scivideos_ICTS:29173,
            doi = {},
            url = {https://youtube.com/live/yJQ0AMg3N5E},
            author = {},
            keywords = {},
            language = {en},
            title = {CT- Giant effective magnetic moments of chiral phonons},
            publisher = {},
            year = {2024},
            month = {jul},
            note = {ICTS:29173 see, \url{https://scivideos.org/icts-tifr/29173}}
          }
Swati Chaudhary
Talk numberICTS:29173
Source RepositoryICTS-TIFR
Source EventEngineered 2D Quantum Materials
Collection

Abstract

Circularly polarized lattice vibrations carry angular momentum and lead to magnetic responses in applied magnetic fields or when resonantly driven with ultrashort laser pulses. The phonons associated with such vibrations are known as chiral phonons. On the basis of purely circular ionic motion, these phonons are expected to carry a magnetic moment of the order of a few nuclear magnetons. However, some recent experiments have demonstrated a phonon magnetic moment of the order of a few Bohr magnetons. This kind of giant magnetic response points towards the electronic contribution to the magnetic moment of phonons. Many diverse mechanisms have been discovered for this enhanced magnetic response of chiral phonons. The orbital-lattice coupling is one such mechanism where low-energy electronic excitations on a magnetic ion hybridize with phonons and endow a large magnetic moment to phonons. In this talk, I'll present a microscopic model for the effective magnetic moments of chiral phonons ba...