What is superconducting?

Some articles on superconducting:

Mattis–Bardeen Theory - Use in Optical Study
... Because any superconducting Tc never exceeds 200K and the superconducting gap value is about the 3.5 kBT, microwave or far-infrared spectroscopy is suitable ... we can derive fruitful properties of superconducting gap, like gap symmetry ...
Bascom S. Deaver
... field of superconductors, he is noted for his discovery that the magnetic flux threading a superconducting ring is quantized, a foundational discovery that led to the ...
Type-I Superconductor
... first described by Lev Landau, is a phase separation into macroscopic non-superconducting and superconducting domains ... field occurs when magnetic flux vortices penetrate the material but the material remains superconducting outside of these microscopic vortices ... When the vortex density becomes too large, the entire material becomes non-superconducting this corresponds to the second, higher critical field ...
Superconducting Radio Frequency
... Superconducting radio frequency (SRF) science and technology involves the application of electrical superconductors to radio frequency devices ... The ultra-low electrical resistivity of a superconducting material allows an RF resonator to obtain an extremely high quality factor, Q ...
Mattis–Bardeen Theory - The Response To The Electromagnetic Wave
... After the transition to superconducting state, the superconducting gap 2Δ arises, and the dispersion relation can be described like semiconductor with band gap 2Δ where the Fermi energy lies ... And is the matrix element of an interaction Hamiltonian where In the superconducting state, each term of the Hamiltonian is dependent, because of the superconducting state consists of a phase-coherent ... wave can be regarded as two parts, the “superconducting” and “normal” electrons ...