Ultralow Temperature Studies of Heavy Electron Superconductors and Superfluid Helium-Three

该建议涉及超低温研究， 重电子超导体（HFS）与声传播 超流氦-3 在HFS中，他们提出了一些 测量以进一步表征各向异性 超导态 他们将研究渗透， 电磁波的吸收和寻找贡献 序参量集体模式的 他们会把这些 超声吸收研究 样品 用单轴应力作为对称破缺场 他们将寻找多种超导相， 产生于各向异性超导体。 这些阶段将是 其特征在于超声、下临界场和上临界场， 热膨胀测量 他们还将调查 杂质和无序对各向异性相的影响。 在 超流氦-三他们建议建造各种 非均匀状态和研究传播的零声 通过他们。

This proposal is concerned with ultralow temperature studies of heavy electron superconductors (HFS) and sound propagation in superfluid helium-three. In HFS they propose a number of measurements to further characterize the anisotropic superconducting states. They will study the penetration and absorption of electromagnetic waves and search for contributions of order-parameter collective modes. They will correlate these mesurements with ultrasound absorption studies on the same samples. Using uniaxial stress as the symmetry breaking field they will search for multiple superconducting phases that can arise in an anisotropic superconductor. These phases will be characterized by ultrasound, lower and upper critical field, and thermal expansion measurements. They will also investigate the effects of impurities and disorder on the anisotropic phases. In superfluid helium-three they propose constructing various inhomogeneous states and study the propagation of zero-sound through them.