Scientists at the U.S. Department of Energy’s Ames Laboratory have discovered an earlier unknown discontinuous magnetoelastic transition in a rare-earth intermetallic. The mechanism of the material’s changing magnetic state is so unusual, it provides new possibilities for discovery of similar materials.
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Physicists have long tried to understand the relationship between a periodic pattern of conduction electrons called a charge density wave (CDW), and another quantum order, superconductivity, or zero electrical resistance, in the same material.For the first time, physicists at Ames Laboratory and their international collaborators were able to explore that relationship in the superconducting and CDW material niobium diselenide (NbSe2), through experiments using swift electron bombardment.
The Department of Energy (DOE) will award Ames Laboratory $10.75 million in funding over four years for a new Center for Advancement of Topological Semimetals, one of DOE’s newest Energy Frontier Research Centers (EFRCs).
Ames Laboratory scientist Liqin Ke is one of 30 scientists from the U.S. Department of Energy’s (DOE) national laboratories to be selected for funding as part of the DOE’s Early Career Research Program. His proposed project, "Quantum Control and Tuning of Magnetic Two-Dimensional van der Waals Heterostructures,” will be funded by the Office of Basic Energy Sciences.
The U.S. Department of Energy’s Critical Materials Institute (CMI) used laser 3D metal printing to optimize a permanent magnet material that may make an economical alternative to the more expensive rare-earth neodymium iron boron (NdFeB) magnets in some applications.