CAREER: The Laboratory Experience: Introductory Physics through Independent Research

这是一个颁发给女性科学家的职业奖，由两个子项目组成。一个组件采用可控引入结构缺陷的方法来修改超导重费米子系统（U,Th）Be13的相图和涡旋行为。该系统表现出多个超导相，以及磁性，并且应该为理解其他非常规超导体，如高tc超导体提供线索。通过重离子辐照可以产生柱状缺陷，通过辐照和取代可以产生点缺陷。低温热力学和磁测量将用于确定系统的超导波函数。教育部分包括通过一组技术要求较低的实验来促进本科生的研究。这包括对固体物体的包装排列的研究。振动一个装有珠子的容器会使它们在二维空间中退火成最密集的排列，而不是在三维空间中。该项目将通过不同的容器尺寸和形状来检查维度交叉，并将测试不同的退火程序，以确定维度和动态过程的相互作用。这是一个授予女性科学家的职业奖，由两个子项目组成。其中一个部分研究被称为“重费米子”超导体的材料。这些超导体像普通的超导体一样携带电流而没有能量损失，但除此之外还表现出不寻常的磁性行为。样品中原子的结构缺陷将被有意地引入，以改变它们的电学和磁性能。由此产生的超导起始温度的变化和超导体的磁性行为有望揭示超导的原子起源。这可能会导致新的超导材料，并在实际应用中更好地理解超导体。教育部分将通过一组技术要求较低的实验，引导本科生进行研究。这些实验包括研究物体如何在二维和三维空间中排列自己。摇动固体物体，如玻璃珠，如果物体被限制在单层，就会使它们以最密集的方式聚集。然而，如果它们在三维空间中堆叠，就不会发生这种情况，就像在一罐咖啡豆中一样。为了理解从二维到三维行为的转变，将研究只有几层厚的物体的排列。包装的一般问题与新型复合材料的制造有关，其中高密度成分通常赋予整个材料特殊性能。技术文摘

Zieve 9733898 This is a CAREER Award to a female scientist and is composed of two subprojects. One component employs the controlled introduction of structural defects to modify the phase diagram and vortex behavior of the superconducting heavy fermion system (U,Th)Be13. This system exhibits multiple superconducting phases, as well as magnetism, and should provide clues to understanding other unconventional superconductors, such as the high-Tc superconductors. Columnar defects will be created through heavy- ion irradiation, and point defects through both irradiation and substitution. Low-temperature thermodynamic and magnetic measurements will be used to identify the superconducting wave function(s) of the system. The educational component involves facilitating undergraduate research through a less technically demanding set of experiments. These involve the study of packing arrangements of solid objects. Vibrating a container of beads anneals them into the densest possible arrangement in two dimensions, but not in three dimensions. This project will examine the dimensional crossover by varying container size and shape, and will test different annealing procedures to determine the interaction of dimensionality and dynamical processes. %%% This a CAREER Award to a female scientist and is composed of two subprojects. One component investigates materials known as "heavy fermion" superconductors. These superconductors carry electric current with no energy loss, like ordinary superconductors, but in addition exhibit unusual magnetic behavior. Structural imperfections of the atoms in the sample will be deliberately introduced in order to modify their electrical and magnetic properties. The resulting changes in the onset temperature of superconductivity and the magnetic behavior of the superconductor are expected to shed light on the atomic origins of the superconductivity. This could lead to new superconducting materials and a better understanding of superconductors in practical applications. The educational component will introduce undergraduates to research through a less technically demanding set of experiments. These experiments involve studies of how objects arrange themselves in two and three dimensions. Shaking solid objects, such as glass beads, causes them to pack in the densest way possible if the objects are constrained to a single layer. However, this does not occur if they are stacked in three dimensions, as in a jar of coffee beans. To understand the transition from two-dimensional to three-dimensional behavior, arrangements of objects only a few layers thick will be studied. The general problem of packing is relevant to the fabrication of new composite materials, where high density components often impart special properties to the overall material. Technical abstract