Continued Search for Very High Tc Superconductors and Novel Superconducting Quantum Effects
Abstract
Solution of Problem 1 of this project will demonstrate a new quantum sensor of magnetic objects. The idea utilizes the behavior of superconductors in the presence of a non-zero curl-less vector potential A discovered by numerical modeling. Namely, finite current-carrying strips of superconductors will have difference in the onset of the resistive transition depending on whetherthe current is along or opposite to the direction of the vector potential. This proposal will provide experimental verification of this prediction. That will result in improved sensitivity sensors of objects containing localized sources of magnetic field, even if their total net field is zero. The experiments require a very low magnetic and vibrational noise environment, high-quality BCS typepatterned superconducting films, and current pulses with picosecond scale rise-times.Solution of Problem 2 will build on more than a decade of research on superconductors with very high critical temperature (at about 200-250K). The first approach uses high power short laser processing to explore strongly out of equilibrium synthesis routes using materials from the strontium-ruthenate family and the sophisticated suite of top-level instruments for materials characterization in our lab. The second approach proposes unique experiments with the Graphene-n-Heptane-Permalloy composite solid-liquid condensed matter systems. The proposed research will target understanding physical mechanisms underlying the already detected anomalous diamagnetic signals and their potential relationship with the room-temperature superconductivity.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 17, 2020
- Source ID
- N000142012442
Entities
People
- Armen Gulian
Organizations
- Chapman University
- Office of Naval Research
- United States Navy