Equations · equation
BCS Energy Gap
Superconductivity · 1957
- Equation
- Δ(0) ≈ 1.76·k_B·T_c
- Field
- Superconductivity
- Named After
- John Bardeen · Leon Cooper · Robert Schrieffer
- Symbols
- Δ the energy gap protecting the superconducting state · k_B Boltzmann constant · T_c the critical temperature where superconductivity dies
- Year
- 1957
Significance
The mechanism, 46 years after the discovery: electrons pair up (Cooper pairs), glued by lattice vibrations, and condense into one collective quantum state protected by this gap — too costly for stray collisions to break, so current flows forever. Bardeen's second Nobel.
Referenced by
constant
element
equation
theory
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