In Situ Determination of Thermodynamic, Magnetic, and Transport Properties of Doped and Undoped Thin Film C60

原位测定掺杂和未掺杂薄膜 C60 的热力学、磁学和输运特性

• 批准号: 9208599
• 负责人: Frances Hellman
• 金额: $ 66.15万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-08-15 至 1998-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9208599&HistoricalAwards=false
• 关键词: Situ; Determination; Thermodynamic; Magnetic; Transport

Superconductivity and metallic behavior in thin films of doped C60 will be probed by studying their thermodynamic, magnetic, transport and superconductive tunneling properties, measured in situ over a wide range of temperature encompassing both the superconducting and orientational structural transitions. Fundamental questions concerning the nature of the superconducting coupling, inter- and intra-ball interactions, electron density of states at the Fermi surface, characteristic phonon frequencies, electron-phonon interaction, and the formation of the interball conduction will be addressed through a series of measurements including specific heat, magnetic susceptibility, resistivity, and Hall effect. Superconductive tunneling spectroscopy will be used to characterize the strength and frequency dependance of the superconducting interaction. Thin film deposition techniques will permit the exploration of metastable phases.

掺杂C_（60）薄膜的超导电性和金属行为 将通过研究它们的热力学，磁性， 和隧道特性，在现场测量超过一个 广泛的温度范围，包括超导和 定向结构转变。 基本问题 关于超导耦合的性质， 球内相互作用，费米能级的电子态密度 表面，特征声子频率，电子-声子 相互作用，球间传导的形成将是 通过一系列测量来解决，包括比热， 磁化率、电阻率和霍尔效应。 超导隧道光谱将用于表征 超导体的强度和频率依赖性 互动 薄膜沉积技术将允许 亚稳相的探索