Critical Currents in Superconductors




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Upon discovering superconductivity in 1911 Kamerlingh Onnes almost immediately grasped that superconductors could lead to high field magnets in a way that could not be achieved by metallic conductors. The reason being that the lossless transport of current would not require the removal of large amounts of heat from a coil. What Onnes couldn’t anticipate is that it would take until the 1960’s before enough theoretical and experimental progress had been made to attain superconductors that could sustain technologically useful currents. 

The understanding of critical currents remains a subject of continuing progress and controversy to this day. In this talk I’ll review some of the basic ideas concerning critical currents. I’ll present my own ideas on how we should use probability theory to understand the phenomenology and how we can use this to better predict critical currents under varying operating conditions and engineer better conductors. Finally I’ll talk about how superconductors will be used in high field magnets in the coming decades to advance high energy and solid state physics and how MacDiarmid researchers may participate in some of the world’s grandest scientific challenges


Victoria University of Wellington, AM103
University of Otago, please use Scopia Desktop
University of Auckland, Room 301.411, L4, Chemistry Building, 23 Symonds St
Massey University, please use Scopia Desktop
Callaghan Innovation – Gracefield Campus, C-Block Meeting Room
University of Canterbury – Psychology 164

If you are unable to attend at one of the above locations the seminar can be viewed via Scopia Desktop