What are Superconductors?
Superconductors are materials that conduct electricity with no resistance whatsoever. In order to achieve superconducting state, the element should have mobile electrons, and these electrons should come together to form pairs, known as Cooper pairs.
Why in news?
TIFR scientists discovered that bismuth semi-metal in bulk form becomes a superconductor. This landmark discovery challenges the conventional understanding of superconductivity based on Bardeen-Cooper-Schrieffer (BCS) theory

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