Electrical properties of Al-Ge granular superconducting films

• Author / Creator

  Yang, Yikai

• A granular superconductor is a system that consists of two types of materials, one is superconducting, and the other is insulating. Instead of alloying, these two materials form a granular structure where superconducting grains are embed in an insulating matrix. This is a seemingly simple structure, yet has complicated consequences that, to this day, physicists don't fully comprehend. In this dissertation, I will first give a brief review of the background theories and the development of the field of granular superconductors. Then account in details how we conducted a series of resistivity measurements with and without magnetic field. In the last part, I will also make an attempt to analyze the recent results we obtained and hopefully will shine light on the mystery of granular superconductors.

• Subjects / Keywords

  • Granular superconducting films
  • Al-Ge

• Graduation date

  Spring 2014

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3RF5KN6H

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.