Now, She et al. lay out in parallel the theoretical expectations for the pair susceptibility ofIt will be interesting to see which group gets to do this test first, and whether the results can actually distinguish one versus the others. Still, this is a prime example of the tunneling phenomenon being used to study other things.
5different theories of superconductivity in quantum critical metals. These scenarios include the orthodox BCS theory with a simple Einstein-oscillator pairing function, BCS with a Hertz-Millis-type criticality of the bosonic spectrum, BCS with a simple pairing function and quantum critical electrons, and two limits of the recently developed holographic superconductivity that borrow mathematical concepts from string theory [anti–de Sitter/conformal field theory (AdS/CFT) correspondence] in order to handle scaling near a quantum critical point.