U.S.-Czech Materials Research on Strongly Correlated Electrons Under Multi-Extreme Conditions

INT 9722777 Beyerman这个由加州大学河滨分校的Ward Beyerman和布拉格查尔斯大学的Vladimir Sechovsky合作的美国-捷克研究项目，将研究强关联电子系统在以下条件下的磁、热、输运和凝聚性：1)极低温度的多极端条件，2)极高磁场和3)高压。得到的实验数据将与理论从头算电子结构计算进行比较，后者考虑了电子结构和材料参数的具体特征。研究人员打算集中研究在选定的4f和5f窄带金属间化合物中各种外部参数的影响。这些结果将有助于我们理解复杂的相互作用及其在不同现象中的作用，包括：重费米子行为、价态混合、非费米液体标度、弱磁有序、能带超磁、巨大的各向异性和巨磁电阻。这样的新知识可能会使设计用于催化和制冷的新材料成为可能。这个材料研究项目通过使美国和中欧的顶尖专家能够结合互补的人才，并在共同感兴趣和能力的领域汇集研究资源，实现了促进基础科学知识发展的计划目标。?？

INT 9722777 Beyerman This U.S.-Czech research project between Ward Beyerman of the University of California-Riverside and Vladimir Sechovsky of Charles University, Prague, will examine magnetic, thermal, transport, and cohesive properties of strongly correlated electron systems under: 1) multi-extreme conditions of very low temperatures, 2) very high magnetic fields, and 3) high pressures. The experimental data obtained will be compared to theoretical ab initio electron structure calculations which account for specific features of the electron structure and material parameters. The researchers intend to concentrate on the influence of various external parameters in selected 4f- and 5f- narrow-band intermetallic compounds. Results are expected to contribute to our understanding of a complex hierarchy of interactions and their role in different phenomena including: heavy fermion behavior, valance mixing, non-Fermi liquid scaling, weak magnetic order, band metamagnetism, huge anisotropy and giant magnetoresistance. Such new knowledge may permit the design of novel materials useful in catalysis and refrigeration. This project in materials research fulfills the program objectives of advancing basic scientific knowledge by enabling leading experts in the United States and Central Europe to combine complementary talents and pool research resources in areas of mutual interest and competence. ??