Resistivity Ratio of Niobium Superconducting Cavities
E. L. Garwin, Mario Rabinowitz
Abstract
Resistivity measurements have been made on Nb cavities, as well as on Pb and Cu, at 296, 77, and 4.2 K by means of a contactless induced-current method. For superconductors, a constant magnetic field drives the material normal below the transition temperature. These measurements provide a simple means for initial material evaluation as well as a direct means of monitoring the effects of material parameters (purity, heat treatment, gas incorporation, etc.) on the electron mean free path. Approximate determinations of Hc, Hc1, and Hc2 can also be derived from these measurements. Normal-state thermal conductivity and the Ginzburg-Landau parameter kappa are calculated from the resistivity measurements.
Create a lesson
Related papers
Variational Monte Carlo Study of Superconductivity in a Correlated System with Broken Inversion Symmetry
Tsuyoshi Imazu, Katsunori Kubo
Predictions of superconducting properties from chemical bonding interactions
Francesco Belli, Trinidad Novoa, Ion Errea et al.
Exact Mirror-Parity Selection Rule for Electron-Phonon Coupling in Two-Dimensional Crystals
Nicolás F. Barrera, Javiera Cabezas-Escares, Francisco Munoz et al.
Ta-based S-I-S junctions for integrated superconducting electronics
Trent Borman, Cameron Bullock, Cole Chason et al.
Nonreciprocal charge transport in quantum materials: From superconductors to magnetic systems
Boning Yu, Yalei Huang, Alltrin Dhanarajagopal et al.
Intra-unit-cell Josephson scanning tunneling spectroscopy of the cuprate Bi1.2Pb0.8Sr2CaCu2O8+δ
Fengyu Yao, Jiong Mei, Wenjin Mao et al.