Physics:Quantum materials/superconductor
A superconductor is a material that exhibits zero electrical resistance and expels magnetic fields when cooled below a critical temperature.
Description
In the superconducting state, electrons form correlated pairs and move coherently through the material without energy loss. This behavior arises from quantum effects that extend across the entire material.
Superconductivity is a macroscopic quantum phenomenon and is closely related to the structure of the material’s band structure.
Properties
- zero electrical resistance
- expulsion of magnetic fields
- occurs below a critical temperature
- macroscopic quantum state
Description
superconductor is a matter-scale concept used to organize how quantum theory describes atoms, particles, fields, condensed matter, plasma, or spacetime-related systems. In the Quantum Collection it is placed by scale so the reader can move from materials and molecules down to subatomic degrees of freedom.
Quantum context
At this scale, the relevant behavior is controlled by quantized states, interactions, conservation laws, and the way excitations or particles are observed. The concept is normally linked to measurable properties such as energy, momentum, charge, spin, spectra, scattering rates, or collective modes.
Role in the collection
This page provides a compact reference point for related pages in Book II. It should be read together with nearby matter-scale topics and the corresponding foundations in quantum mechanics.[1]
See also
Table of contents (84 articles)
Index
Full contents
References
Source attribution: Physics:Quantum materials/superconductor
