FRUSTRATED METALS ON A TRIANGULAR LATTICE

Nobuo Furukawa (), Shin Miyahara and C. Hotta
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Nobuo Furukawa: Department of Physics, Aoyama Gakuin University, Sagamihara, 229-8558, Japan
Shin Miyahara: Department of Physics, Aoyama Gakuin University, Sagamihara, 229-8558, Japan
C. Hotta: Department of Physics, Aoyama Gakuin University, Sagamihara, 229-8558, Japan

International Journal of Modern Physics C (IJMPC), 2009, vol. 20, issue 09, 1477-1484

Abstract: Frustrated metals are investigated by numerical methods. In the absence of fermionic dynamics, the models are equivalent to a frustrated Ising model on a geometrically frustrated lattice, where macroscopic degeneracies are observed in the ground states. By taking into account fermionic hoppings, the models show partial loss of degeneracy, but still remains to be frustrated. Various properties of the system, including charge correlations, are also examined.

Keywords: Frustration; strong correlation; fermiology; macroscopic degeneracy; 72.80.Le; 72.80.Ng; 75.40.-s; 75.50.Mm (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0129183109014539

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