Quasiparticles: Difference between revisions
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(Created page with "{{DISPLAYTITLE:Quasiparticles}} == Quasiparticles == Quasiparticles are emergent phenomena that occur in many-body systems, where the collective behavior of particles can be described as if they were single particle-like entities. Unlike elementary particles, which are fundamental and cannot be broken down into smaller components, quasiparticles arise from the interactions between multiple particles in a condensed matter system. Quasiparticles play a crucial role in u...") |
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[[MetaParticles]]( [[Metaparticles]] ) | |||
[[QuasiParticles]]( [[Quasiparticles]] ) | |||
[[QuaziParticles]]( [[Quaziparticles]] ) | |||
= [[QuasiParticles]] = | |||
== List of Common Quasiparticles == | == List of Common Quasiparticles == | ||
Latest revision as of 14:29, 22 August 2024
MetaParticles( Metaparticles )
QuasiParticles( Quasiparticles )
QuaziParticles( Quaziparticles )
QuasiParticles[edit | edit source]
List of Common Quasiparticles[edit | edit source]
Phonons[edit | edit source]
- Description: Quasiparticles that represent quantized vibrations in a crystal lattice.
- Role: Important in understanding thermal conductivity and sound propagation in solids.
- See also: Phononic Crystals, Phonon-Phonon Interactions
Magnons[edit | edit source]
- Description: Quasiparticles associated with the collective excitations of electron spins in a material.
- Role: Play a key role in the study of Magnetism and magnetic materials.
- See also: Spin Waves, Magnetons
Polaritons[edit | edit source]
- Description: Quasiparticles that result from the strong coupling of photons with another type of excitation in a material (like Phonons or Excitons).
- Role: Important in understanding light-matter interactions in materials, particularly in Optics and Photonics.
- See also: Polaron-Polariton, Surface Polaritons
Excitons[edit | edit source]
- Description: Quasiparticles that form when an electron binds to a hole (a missing electron) in a Semiconductor.
- Role: Crucial in the study of semiconductors and light emission in materials like LEDs and solar cells.
- See also: Biexcitons, Trions
Plasmons[edit | edit source]
- Description: Quasiparticles associated with collective oscillations of the free electron gas in a material, usually in Metals.
- Role: Important in the study of optical properties of metals and Nanophotonics.
- See also: Plasmoids, Surface Plasmons
Polaron[edit | edit source]
- Description: A Quasiparticle representing an electron in a material that is surrounded by a cloud of lattice distortions (Phonons).
- Role: Important in understanding electron mobility in certain materials, such as Ionic Crystals and Organic Semiconductors.
- See also: Bipolarons, Polaronic Crystals
Fermions and Bosons (as quasiparticles in many-body systems)[edit | edit source]
- Description: In certain condensed matter systems, collective excitations can behave like Fermions or Bosons, even if the constituent particles are not.
- Role: This helps explain phenomena in complex systems like Superconductivity (Cooper Pairs act as bosons) and Superfluidity.
- See also: Quasifermions, Quasibosons
Anyons[edit | edit source]
- Description: Quasiparticles that exist in two-dimensional systems with properties that are neither purely fermionic nor bosonic.
- Role: Theoretically significant in Quantum Computing, particularly in Topological Quantum Computers.
- See also: Fractional Quantum Hall Effect, Non-Abelian Anyons
Quasiparticles in Fermi Liquids[edit | edit source]
- Description: These represent low-energy excitations in a system of interacting Fermions that behave like non-interacting fermions.
- Role: Crucial in understanding the properties of Metals and other systems described by Fermi Liquid Theory.
- See also: Landau Quasiparticles, Fermi-Dirac Quasiparticles
