superconductor

superconductor

A scientist carefully places a superconductor above a magnet to demonstrate levitation.

Definition
  1. Noun:
    • A material that conducts electricity without resistance: A "superconductor" is a substance that, when cooled below a certain critical temperature, exhibits zero electrical resistance and the expulsion of magnetic fields (the Meissner effect).
    • A state of matter in physics: In condensed matter physics, a "superconductor" refers to a material in the superconducting phase, where electrons pair up (Cooper pairs) and flow without energy loss.
Usage Examples
  • Noun:
    • The new ceramic superconductor operates at a higher temperature than previous materials. (A substance that conducts electricity without resistance at relatively higher temperatures.)
    • Scientists are researching superconductor applications in magnetic levitation trains. (Materials used to create powerful magnetic fields for frictionless transport.)
Advanced Usage

  • "Type I superconductor": A superconductor that completely expels magnetic fields below its critical field, typically pure metals like mercury or lead.

    • Type I superconductors are limited by their low critical magnetic fields. (They lose superconductivity easily in strong magnetic fields.)

  • "Type II superconductor": A superconductor that allows partial penetration of magnetic fields in the form of vortices, often used in high-field magnets.

    • Type II superconductors are essential for constructing powerful electromagnets. (They can sustain superconductivity in higher magnetic fields than Type I.)
Variants and Related Words

  • Superconductivity (n): the property of zero electrical resistance in a material.

    • The discovery of superconductivity in mercury at 4.2 K revolutionized physics. (The phenomenon of zero resistance at low temperatures.)

  • Superconducting (adj): relating to or exhibiting superconductivity.

    • The superconducting coil generated a magnetic field without any power loss. (The coil operates without electrical resistance.)
Synonyms
  • Zero-resistance conductor: a material that offers no opposition to electric current.
  • Perfect conductor: an idealized material with infinite electrical conductivity.
Phrasal Verbs (Not directly applicable; no common phrasal verbs with "superconductor")
Related Idioms (Not directly applicable; no common idioms with "superconductor")