The Kondo Problem To Heavy Fermions

By D. Abend. 2016

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The Hubbard Model (2021, background): “While quantum many-body models are generally insoluble except in very special cases, by extending the global symmetry of the model from SU(2) to a larger group such as SU(N) or Sp(N), a systematic expansion in powers of 1/N about the N →∞ limit can often be derived (68, 69, 70, 71, 72, 73).”
Flat bands, strange metals and the Kondo effect (2023, unknown): “2, star symbols), a particular type of non-Fermi liquid behaviour, which we discuss next.”
A ferroelectric quantum phase transition inside the superconducting dome of Sr1−xCaxTiO3−δ (2017, background): “The Kondo effect, a many-body resonant scattering due to coupling between the Fermi sea and an alien spin[29] can give rise to such an upturn.”
Advances and challenges in single-molecule electron transport (2019, background): “The characteristic energy scale is (Hewson, 1993), kBTK = E0 exp [ −π Γ ( 1 ε0 + U − 1 ε0 )−1] , (20) where the factor E0 ' max(D,U) and D denotes the half-width of the conduction band associated with the leads.9 Since the Kondo temperature TK is exponentially small in the ratio U/Γ, the Kondo…”