Tuning superconductivity in twisted bilayer graphene
Abstract
The discovery of superconductivity and exotic insulating phases in twisted bilayer graphene has established this material as a model system of strongly correlated electrons. To achieve superconductivity, the two layers of graphene need to be at a very precise angle with respect to each other. Yankowitz et al. now show that another experimental knob, hydrostatic pressure, can be used to tune the phase diagram of twisted bilayer graphene (see the Perspective by Feldman). Applying pressure increased the coupling between the layers, which shifted the superconducting transition to higher angles and somewhat higher temperatures.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 08, 2019
- Source ID
- 10.1126/science.aav1910
Entities
People
- Andrea Young
- Cory Dean
- David Graf
- Hryhoriy Polshyn
- Kenji Watanabe
- Matthew Yankowitz
- Shaowen Chen
- Takashi Taniguchi
- Yuxuan Zhang
Organizations
- Alfred P. Sloan Foundation
- Army Research Office
- Columbia University
- David and Lucile Packard Foundation
- Japan Society for the Promotion of Science
- National High Magnetic Field Laboratory
- National Institute for Materials Science
- National Science Foundation
- University of California