Electrons in a superconductor form Cooper pairs and thus condense into a ground state which can be described by a macroscopic quantum wavefunction. The phase of the wavefunction represents a collective movement of millions of Cooper pairs.

 
  • 超导体中的电子结成库珀对;凝聚到可以用一个宏观波函数来描绘的能量基态;该波函数的位相是代表了成百万库珀对集体运动的宏观变量.
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