Physics Near the Kondo Insulator Fixed Point

小行星9870034菲斯克 这个实验凝聚态物理项目研究位于近藤绝缘体基态附近的基态，其传导电子浓度与占据的磁轨道之比e/f = 1。 的假设 研究的结果是，中间价态位于e/f = 1附近，以及重费米子超导态。 实验计划将研究掺杂的UBe 13， CeIn3 在压力下，合金系列Sr 1-xSmxB6和各种中间价材料的单晶。 将研究温度依赖的输运、热力学和光学性质。 该研究为材料合成和表征领域的研究生提供了良好的培训。 这个实验凝聚态物理学计划旨在了解化合物中磁性的丧失，通过改变施加到化合物的压力或改变化合物的化学性质，导致这些化合物的新特性，最显着的是超导性。 组织实验的假设是，最有趣的物理性质发生在电荷载流子数量等于化合物中磁性位点数量的附近。 磁性， 电学和光学性质 都是经过测量的。 这项工作正在解决高温超导物理学的重要问题，以及外来的磁性超导体和绝缘体。该研究为材料合成和表征领域的研究生提供了良好的培训。 ***

9870034 Fisk This experimental condensed matter physics project investigates ground states which lie near the Kondo insulator ground state, which has a ratio of conduction electron concentration to occupied magnetic orbitals e/f = 1. The hypothesis being investigated is that intermediate valence states lie near e/f = 1, as well as the heavy Fermion superconducting state. The experimental program will study doped UBe13, CeIn3 under pressure, the alloy series Sr1-xSmx B6 and single crystals of various intermediate valence materials. Temperature dependent transport, thermodynamic and optical properties will be studied. The research provides excellent training for graduate students in the areas of materials synthesis and characterization. %%% This experimental condensed matter physics program seeks to understand how the loss of magnetism in a compound, happening through changing pressure applied to the compound or changing the chemistry of the compound, leads to essentially new properties of such compounds, most notably superconductivity. The hypothesis around which the experiments are organized is that the most interesting physical properties occur near where the number of charge carriers equals the number of magnetic sites in the compound. Magnetic, electrical and optical properties are measured. The work is addressing questions important to the physics of high temperature superconductivity, as well as exotic magnetically based superconductors and insulators. The research provides excellent training for graduate students in the areas of materials synthesis and characterization. ***