High Temperature Superconductor Twistronics
Abstract
Controlling the stacking angles of atomically thin van der Waals (vdW) layered two-dimensional (2D) materials offers an exciting opportunity to engineer moire superlattices at their interfaces. These tunable lattice structures offer diverse electronic, magnetic, and optical behaviors, enabling a new avenue of device applications known as twistronics. In many high-temperature superconductors, where the transition temperature is well above the boiling point of liquid nitrogen, the inherent layered structures offer the potential for moire engineering, especially in the GHz to THz frequency range, consistent with the enhanced superconducting gap of these materials. Due to the tunability of the size and symmetry of the superconducting gaps at these interfaces, Bi2Sr2CaCu2O8+x (BSCCO) twistronics also holds great promise for GHz and THz device applications. This study will include investigating the THz response of BSCCO twistronics coupled with emitter, controlling the THz emission from the Josephson plasma at the twisted junctions, and exploring the strong coupling between superconducting states within the THz radiation. These research efforts are aimed at realizing tunable miniaturized devices that bridge the THz frequency gap.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA95502510019
Entities
People
- Philip Kim
Organizations
- Air Force Office of Scientific Research
- President and Fellows of Harvard College
- United States Air Force