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Intellectual Merit

PrRu 4 As 12 Single Crystals. ~0.1mm. Strongly Correlated Electron Behavior in PrT 4 As 12 (T = Fe, Ru, Os) Single Crystals M. Brian Maple, University of California, San Diego — DMR 0335173. Intellectual Merit.

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Intellectual Merit

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  1. PrRu4As12 Single Crystals ~0.1mm Strongly Correlated Electron Behavior in PrT4As12 (T = Fe, Ru, Os) Single Crystals M. Brian Maple, University of California, San Diego — DMR 0335173 Intellectual Merit The Pr-based filled skutterudite compounds with the formula PrT4X12 (where T = Fe, Ru, Os; X = P, As, Sb) exhibit a number of interesting phenomena. Pioneering research in our laboratory has made substantial contributions to further the understanding of these systems. Recent measurements of the Pr-based filled skutterudite antimonides, have confirmed BCS superconductivity in PrRu4As12 and discovered antiferromagnetic order and heavy fermion behavior in PrOs4As12 as well as ferromagnetic ordering in PrFe4As12. Paramagnetic The above figure displays the H-T phase diagram for PrOs4As12, indicating two phase transitions in zero field, which are suppressed to 0 K by ~3 T. Neutron diffraction measurements confirmed antiferromagnetic ordering (AFM) for the low field phase. Further neutron diffraction measurements in high magnetic field will be performed to determine the nature of the second ordered phase (OP2).

  2. Strongly Correlated Electron Behavior in PrT4As12 (T = Fe, Ru, Os) Single Crystals M. Brian Maple, University of California, San Diego — DMR 0335173 Societal Impact and Community Outreach: We are proud to participate in science day events which promote interest in the sciences in young students and parents. While these events are not directly related to our research, we believe that the development of science awareness in students, through dynamic hands-on experiments and demonstrations, is essential to their continued excitement and interest in science. For this reason we are annually involved in the Del Mar Pines Elementary School Science Day and also recently began to participate in Science Night at Toler Elementary School. Toler Elementary School 2006 Del Mar Pines Elementary School 2005

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