Magnetism Governs Properties of Iron-Based Superconductors (IMAGE)
Caption
NIST research shows that magnetism plays a key role in iron pnictide superconductors' crystal structure. (Iron is purple; arsenic is yellow; calcium is green.) Only if the iron's magnetism is taken into account do calculations of the distance between these crystal layers match up with lab measurements. Magnetism's importance to their physical properties make it a likely factor in the iron pnictides' ability to superconduct, say team members.
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Credit: Yildirim, NIST
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