Ytterbium Crystal UT (IMAGE) Georgia Institute of Technology Caption The tiny YbMgGaO4 crystal was reproduced by physicists at the University of Tennessee. The crystal, here perched on a stand for testing, appears to be the next extremely rare material to house an equally as rare observable quantum spin liquid. Credit Georgia Tech / Martin Mourigal Usage Restrictions None License Licensed 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.