1 A. A. Katanin a,b,c and A. P. Kampf c 2004 a Max-Planck Institut für Festkörperforschung, Stuttgart b Institute of Metal Physics, Ekaterinburg, Russia c Theoretische Physik III, Institut für Physik, Universität Augsburg Anomalous self-energy and pseudogap formation near an antiferromagnetic instability
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1 A. A. Katanin a,b,c and A. P. Kampf c 2004 a Max-Planck Institut für Festkörperforschung, Stuttgart b Institute of Metal Physics, Ekaterinburg, Russia.
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1
A. A. Katanina,b,c and A. P. Kampfc
2004
a Max-Planck Institut für Festkörperforschung, Stuttgartb Institute of Metal Physics, Ekaterinburg, Russiac Theoretische Physik III, Institut für Physik, Universität Augsburg
Anomalous self-energy and pseudogap formation near
an antiferromagnetic instability
2
IntroductionIntroduction
PM (Fermi liquid,
well-defined QP)
metallic AF (n 1)
T*0
PM
metallic AF
T*
C exp(T*/T),T < T*
C exp(T*/T),T < T*
T
dSC
T
2-ndorder QPT
1-storder QPT
Previous studies:SF model (A. Abanov, A. Chubukov, and J. Schmalian)2D Hubbard model:• DCA (Th. Maier, Th. Pruschke, and M. Jarrell)• FLEX (J. J. Deisz et al., A. P. Kampf) • TPSC (B. Kyung and A. M.-S. Tremblay)
• What are the changes in the electronic spectrum on approaching an AF metallic phase in 2D ?