Qiang Li and Lijun Wu (IMAGE)
Caption
Brookhaven physicist Qiang Li (right) and materials scientist Lijun Wu in an electron microscopy lab in the Condensed Matter Physics and Materials Science Department at Brookhaven Lab. Li and his team used electron microscopes to examine the microstructural defects that appeared in an iron-based superconducting material after the material was bombarded with low-energy protons. These defects caused the lattice to locally compress or stretch out, as seen in the colored strain "maps" on the computer screen. Their analysis unraveled the structural origin of the simultaneous enhancement of two superconducting properties of the iron-based superconductor: the temperature at which the material becomes able to conduct electrical current with no energy loss and the amount of current the material can carry without losing this ability.
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Brookhaven National Laboratory
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