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What is a frustrated system?

  1. May 5, 2008 #1
    this term is often used when discussing spin glasses, etc.
     
  2. jcsd
  3. May 5, 2008 #2

    Gokul43201

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    Frustration is typically the result of having a highly degenerate ground state. Consider a system of 3 spin-1/2 particles on the vertices of a triangle, with a pairwise anti-ferromagnetic interaction. This system has a triply degenerate ground state (1u 2u 3d or 1u 2d 3u or 1d 2u 3u) and is thus said to be frustrated. The concept can be extended from there to a triangular lattice, or a cubic lattice with different interactions and further to disordered, amorphous materials. A spin glass is a frustrated spin system that exhibits the weird, long-time dynamics of glassy systems.
     
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