Observation of interplay between phonon chirality and electronic band topology

Authors: Felix G. G. Hernandez, Andrey Baydin, Swati Chaudhary, Fuyang Tay, Ikufumi Katayama, Jun Takeda, Hiroyuki Nojiri, Anderson K. Okazaki, Paulo H. O. Rappl, Eduardo Abramof, Martin Rodriguez-Vega, Gregory A. Fiete, Junichiro Kono

Published: 2023-12-15

DOI: 10.1126/sciadv.adj4074

Source: Full article


Abstract

The recently demonstrated chiral modes of lattice motion carry angular momentum and therefore directly couple to magnetic fields. Notably, their magnetic moments are predicted to be strongly influenced by electronic contributions. Here, we have studied the magnetic response of transverse optical phonons in a set of Pb