Pseudomagnetic fields for sound at the nanoscale
Abstract
Unlike electrons, phonons do not feel a magnetic field, because they are not charged. Thus, much of the physics connected with charged particles in magnetic fields is absent for phonons, be it the Lorentz force or the unidirectional transport along the sample edges. Recently, researchers have started to study how one might make phonons akin to electrons in a magnetic field or related topological settings. The first experimental implementations involving coupled pendula or gyroscopes or air currents have already been realized at the macroscopic scale. Here, we describe a design that is well-suited for the nanoscale. It is purely geometric in nature and could be implemented based on an already experimentally demonstrated platform, a simple patterned 2D material.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 11, 2017
- Source ID
- 10.1073/pnas.1615503114
Entities
People
- Christian Brendel
- Florian Marquardt
- Oskar J. Painter
- Vittorio Peano
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- California Institute of Technology
- European Commission
- European Research Council
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- Gordon and Betty Moore Foundation
- Max Planck Institute for the Science of Light
- National Science Foundation