Strongly Correlated Electrons in a Magnetic Field: Fermi Liquid versus Spin Liquid
J. Spałek
Institute of Theoretical Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

and W. Wójcik
Institute of Physics, Technical University, Podchorążych 1, 30-084 Kraków, Poland
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We compare the Fermi liquid (FL) and statistical spin liquid (SSL) representations of the electronic properties for strongly correlated systems. In particular, we discuss the entropy, as well as the magnetization as a function of band filling, temperature and magnetic field. These properties are quite different in the two (FL, SSL) states. Antiferromagnetic state disappears for a small number of holes in the doped Mott insulator.
DOI: 10.12693/APhysPolA.85.357
PACS numbers: 71.28.-d, 75.10.Lp