A new discovery answers an old question
(PhysOrg.com) -- The transition-metal monoxide FeO is an archetypal example of a Mott insulatora material that should conduct electricity under conventional band theories but becomes an insulator when measured, especially at low temperaturesand a major iron-bearing component of the Earths interior. Understanding the high-pressure behavior of this material is important for both solid-state physics and Earth science. But despite considerable study over the past 30 years, the origin of the well-known high-pressure-induced cubic-rhombohedral ferroic transition in FeO, which is a distortion of the original cubic structure to that of as rhomboid shape, has been not well understood....
Source: PhysOrg - Monday, 30 January
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