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Which outcome occurs when a Josephson junction is cryogenically cooled and a DC bias voltage is applied?

A)Cooper pairs tunnel through the barrier
B)Junction temperature reaches critical point
C)Electrons exhibit increased ohmic resistance
D)Magnetic flux creates quantized vortices

💡 Explanation

Tunneling of Cooper pairs through the insulating barrier occurs because the superconducting state enables paired electrons to tunnel as a unit, rather than individually thereby producing a supercurrent across the junction; therefore, a supercurrent flows, rather than resistance effects.

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