Systematic search for very high-temperature superconductivity in carbon-related compounds, including materials via nonequilibrium phase diagram routes
Abstract
The spread and depth of the utilization of superconductors in future Naval applications will greatly expand as soon as the superconducting properties of the materials persists at room (and higher) temperatures without any cryogenic equipment being employed. Despite generations of effort to achieve that goal, multiple experts now dare to predict a breakthrough soon. Our own group has spent several years of ONR supported lab efforts analyzing ceramic samples ofvarious compositions in the strontium ruthenate families. Often exotic magnetic phases appeared along with what may have been superconducting second or third phases with Tc as high as 250K. To better understand how close the desired breakthrough is and see if there might be a more productive approach, we organized in spring of 2017 the Second International Workshop "Towards Room Temperature Superconductivity: Superhydrides and More" under a partial ONR support. There researchers from China and Germany both reported hints of promise in carbonrelated compounds. More recently a Japanese group reported achieving a long term persistent DC current, a true hallmark of superconductivity. A talk at the 2018 March APS meeting reported seeing superconductivity in twisted sheets of graphene. This proposed effort willsystematically study this constellation of experimental results and see how far they can be pushed. Laser processing of the most promising modified strontium-ruthenate ceramic samples will also be included.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 27, 2018
- Source ID
- N000141812636
Entities
People
- Armen Gulian
Organizations
- Chapman University
- Office of Naval Research
- United States Navy