Superconductor was classified into two types before –
- s – wave superconductor
- d – wave superconductor
Various theories were presented before where it was declared that there are many more types of superconductor that is yet to be discovered.
The latest research done by Cornell researchers has discovered the g-wave superconductor for the first time. The research was led by Brad Ramshaw accompanied by the Dick & Dale Reis Johnson Assistant Professor in the College of Arts and Sciences.
Their latest paper “Thermodynamic Evidence for a Two-Component Superconducting Order Parameter in Sr2RuO4” is published in Nature Physics describing the g-wave superconductor, which brings up completely new properties in it.
In the present time superconductors have become a crucial component in supercomputing, and quantum computing but superconductors need to be cooled at ultra-low temperatures so that they can operate perfectly.
Although the researchers were seeking a p-wave superconductor, they identified the g-wave superconductor. Ramshaw mentioned, “This experiment shows the possibility of this new type of superconductor that we had never thought about before.”
He also added “It opens up the space of possibilities for what a superconductor can be and how it can manifest itself. If we’re ever going to get a handle on controlling superconductors and using them in technology with the kind of fine-tuned control we have with semiconductors, we want to know how they work and what varieties and flavors they come in.”
The leading applicant for the p-wave superconductor has been strontium ruthenate (Sr2RuO4) but new research was digging holes into the idea.
Researchers set out to complete the study whether strontium ruthenate is a p-wave superconductor. With the help of high-resolution resonant ultrasound spectroscopy, it was founded that the material is completely a new type of superconductor altogether: g-wave.
“This experiment really shows the possibility of this new type of superconductor that we had never thought about before,” Ramshaw said. “It really opens up the space of possibilities for what a superconductor can be and how it can manifest itself. If we’re ever going to get a handle on controlling superconductors and using them in technology with the kind of fine-tuned control we have with semiconductors, we really want to know how they work and what varieties and flavors they come in.”
Yet, the work on strontium ruthenate has not ended yet.
“This material is extremely well studied in a lot of different contexts, not just for its superconductivity,” Ramshaw said. “We understand what kind of metal it is, why it’s a metal, how it behaves when you change temperature, how it behaves when you change the magnetic field. So you should be able to construct a theory of why it becomes a superconductor better here than just about anywhere else.”
The advancement will guide the science community to know more about various properties of superconducting materials. In the coming future the researchers will look into other materials that would bring out the p-wave superconductivity.