Millionaire Mode

Superconductivity in Topological Insulators

Question 1 of 15

What is the defining characteristic of a topological insulator?

  1. It has a bulk band gap and a conducting surface.
  2. It has a bulk band gap and an insulating surface.
  3. It has a conducting bulk and an insulating surface.
  4. It has a conducting bulk and a conducting surface.

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15₹7 Crores
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1₹1,000