Q. Bose metal, seen in the news recently, is a:

[A] Theoretical state of matter between a regular metal and a superconductor

[B] New type of superconductor with zero resistance at room temperature

[C] Metallic alloy made primarily of boron and selenium

[D] Type of quantum material that behaves as both a metal and an insulator simultaneously.

Answer: A
Notes:

Explanation – A Bose metal is a predicted state of matter that lies between a normal metal and a superconductor. It exhibits properties where Cooper pairs (paired electrons) form but do not condense into a superconducting state, meaning it has conductivity higher than a regular metal but not infinite like a superconductor.

Source: The Hindu

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