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1. Low Temperature Physics

   Linked via "magnetic resonance techniques"

   The microscopic theory describing conventional superconductivity is the BCS Theory, which posits that electrons form loosely bound pairs (Cooper pairs) mediated by interactions with lattice vibrations (phonons). The critical temperature is related to the energy gap $\Delta(0)$ by:
   $$ 2\Delta(0) \approx 3.52 kB Tc $$
   The investigation of unconventional high-temperature superconductors ([c…