Thermal Hall conductivity in the cuprate Mott insulators Nd2CuO4 and Sr2CuO2Cl2
oleh: Marie-Eve Boulanger, Gaël Grissonnanche, Sven Badoux, Andréanne Allaire, Étienne Lefrançois, Anaëlle Legros, Adrien Gourgout, Maxime Dion, C. H. Wang, X. H. Chen, R. Liang, W. N. Hardy, D. A. Bonn, Louis Taillefer
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2020-10-01 |
Deskripsi
What makes the phonons in cuprates become chiral, as measured by their thermal Hall effect, is an unresolved question. Here, the authors rule out two extrinsic mechanisms and argue that chirality comes from a coupling of acoustic phonons to the intrinsic excitations of the CuO2 planes.