Super Pairs (IMAGE) Massachusetts Institute of Technology Caption MIT physicists have captured snapshots of particles pairing up in a cloud of atoms, which can provide clues to how electrons pair up in a superconducting material. In this data figure, the red and blue balls are spin-up and spin-down fermions, and some are paired together. The white sites are doubly occupied sites. Credit Image: Thomas Hartke Usage Restrictions Images are made available to non-commercial entities, press and the general public under a Creative Commons Attribution Non-Commercial No Derivatives license. You may not alter the images provided, other than to crop them to size. A credit line must be used when reproducing images License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.