Antiferromagnetic Fermi liquid

Monthoux, P. and Pines, D. (1993). YBa2Cu30v A nearly antiferromagnetic Fermi liquid. Phys. Rev. B, 47 6069. 

BS Bardeen-Stephen NAFLM Nearly antiferromagnetic Fermi liquid... 

Figure 5 The generic phase diagram of the (TMfjX as a function of pressure or anion substitution. On the left, the normal phase of sulfur compounds can be described as a Luttinger liquid that becomes gapped in the charge sector (LL, ) below Tj, and can develop either a spin-Peierls (SP) or localized antiferromagnetic ordered state. Under pressure, the properties of the sulfur series evolve toward those of the selenides for which the normal state shows a progressive restoration of a Fermi liquid (FL) precursor to antiferromagnetism (AF) and superconductivity (S), after [28].

The superconducting fulleride (NH3) aK2C6o has been investigated using SQUID magnetometry and NMR in two differently doped samples. NMR relaxation measurements vahdate the interpretation of the spin susceptibility in terms of density of states and rule out the presence of strong antiferromagnetic correlations in the Fermi liquid. 

The normal Fermi liquid state becomes rmstable at low temperatures. At Tn 5.8 K an antiferromagnetic phase with extremely small ordered moments /r 0.035/u,b/17 develops (Heffner et al., 1989 Hayden et al., 1992 Lussier et al., 1996). The most exciting phenomena are associated with the superconducting state. The existence of two clearly... 

Fig. 1. Qualitative phase diagram for the high-r cuprates, illustrating the cross-over temperatures T and T described in the text, and the antiferromagnetic insulating (AF), superconducting (SC), and Fermi-liquid (FL) phases (adapted from Emery, Kivelson and Zachar 1997).

Non-Fermi-Liquid Behavior from Two-Dimensional Antiferromagnetic Fluctuations A Renormalization-Group and Large-N Analysis. 

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