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Low temperature phase of charge density waves - facts and fiction

Charge density wave (CDW) ground state consists of coherent superposition of bound electron-hole pairs from opposite sides of quasi one-dimensional (q1d) Fermi surface with 2kF common wavevector. The properties of new state at sufficiently low excitation energies can be described by spatio-temporal variations of corresponding order parameter. As CDW has zero net spin, majority of CDW models does not discriminate between different spin channels and, moreover, consider only the low lying excitations of CDW phase (phasons).

CDW; Low temperature

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