Calculate the wavelength of the photon required to break the Cooper pair in a superconductor with a transition temperature of 1.3 K.
In condensed matter physics, the energy required to break a Cooper pair in a superconductor is approximately equal to the superconducting energy gap Δ\Delta, which is related to the critical temperature TcT_c. According to BCS (Bardeen-Cooper-Schrieffer) theory, the energy gap ______ _______ ____ ___ _____ __________ ____.
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