A new fractional vortex state observed in an unconventional superconductor may offer the first glimpse of an exotic state of matter predicted theoretically for more than 30 years. In a paper published in the January 14 issue of Science, University of Illinois physicists, led by Raffi Budakian, describe their observations of a new fractional vortex state in strontium ruthenium oxide (SRO). Such states may provide the basis for a novel form of quantum computing in which quantum information is encoded in the topological properties of a physical system.

“We’ve been on the trail of a state of matter called a half-quantum vortex for more than three years,” said Budakian. “First proposed in the 1970s to exist in superfluid helium-3, a half-quantum vortex can be thought of as a ‘texture’ that arises from the spin phase of the superconducting order parameter.”

Budukian’s group investigated strontium ruthenium oxide (SRO), an unconventional superconductor that has been proposed as the solid-state analog of the A-phase of superfluid helium-3. Using state-of-the-art nanofabrication methods and exquisitely sensitive cantilever-based magnetometry techniques developed by the group, the researchers observed minute fluctuations in the magnetism of tiny rings of SRO.


Hey hey hey wait… interesting no!!!… Den know about it going through http://www.sciencedaily.com

Posted By

Ravi Teja (ECE 3/4) MGIT