Matches in SemOpenAlex for { <https://semopenalex.org/work/W2079761505> ?p ?o ?g. }
- W2079761505 abstract "We investigate a (semi-)metal to insulator transition (MIT) realized in geometrically frustrated electron systems on the basis of the Hubbard model on a three-dimensional pyrochlore lattice and a two-dimensional checkerboard lattice. Using the renormalization-group method and mean-field analysis, we show that in the half-filling case, MIT occurs as a result of the interplay between geometrical frustration and electron correlation. In the insulating phase, which has a spin gap, the spin rotational symmetry is not broken, while charge ordering exists. The charge ordered state is stabilized so as to relax the geometrical frustration in the spin degrees of freedom. We also discuss the distortion of the lattice structure caused by the charge ordering. The results are successfully applied to the description of the MIT observed in the pyrochlore system ${mathrm{Tl}}_{2}{mathrm{Ru}}_{2}{mathrm{O}}_{7}.$" @default.
- W2079761505 created "2016-06-24" @default.
- W2079761505 creator A5087400950 @default.
- W2079761505 date "2003-06-10" @default.
- W2079761505 modified "2023-10-18" @default.
- W2079761505 title "Metal-insulator transition, spin gap generation, and charge ordering in geometrically frustrated electron systems" @default.
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- W2079761505 doi "https://doi.org/10.1103/physrevb.67.235102" @default.
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