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Special Seminar: Development of new materials ‘from scratch’: proposed and confirmed boron-based superconductors

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A.N. Kolmogorov, SUNY Binghamton
When
16 May 2014 from 2:30 PM to 3:30 PM
Where
318 Osmond Laboratory
Contact Name
Contact Phone
814-863-0163
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In the search for new phonon-mediated superconductors, we have recently completed the most extensive ab initio analysis of metal boride materials. A combination of high-throughput screening, targeted evolutionary search, and rational design has been employed to examine over 12,000 relevant M-B candidate materials. Dozens of synthesizable brand-new structures or compounds have been identified under ambient and elevated pressures. Some of the predictions have already been confirmed in joint experiments. Surprisingly, the most promising stable phonon-mediated superconductor was uncovered not in Mg-B-like systems but rather in the Fe-B binary. The proposed FeB4 compound with a previously unknown crystal structure has been recently synthesized and shown to exhibit phonon-mediated superconductivity. I will describe developed strategies for selection of candidates based on their potential for stability and superconductivity.

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