Momentum Distributions in Strongly Correlated Electron Systems: Heavy Fermions, Mott Insulators and High Temperature Superconductors

1989 ◽  
pp. 235-247
Author(s):  
S. Doniach
2002 ◽  
Vol 09 (02) ◽  
pp. 995-1006 ◽  
Author(s):  
TAKASHI TAKAHASHI

Recent progress in the energy and momentum resolutions in photoemission spectroscopy (PES) is remarkable, enabling a new challenge to long-standing and/or current fundamental problems in the strongly correlated electron systems. We review the history, current status, and future of high-resolution PES by showing representative experimental results on high-temperature superconductors, low-dimensional materials and heavy fermion f electron compounds.


1995 ◽  
Vol 09 (16) ◽  
pp. 971-975 ◽  
Author(s):  
ARIANNA MONTORSI

We show that the fermionic linearization scheme for dealing with strongly correlated electron systems — when implemented with Clifford variables — becomes exact in the d=∞ limit, at least for Hubbard-like models. In this case, the model is mapped exactly into a single-site problem. The conditions under which such a feature allows to obtain an exact solution are also discussed.


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