Absence of Translational Symmetry Breaking in Nonmagnetic Insulator Phase on Two-Dimensional Lattice with Geometrical Frustration

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dc.creatorWatanabe, Shinji
dc.creatorImada, Masatoshi
dc.date2002-07-23
dc.date2002-08-08
dc.date.accessioned2026-07-07T06:30:11Z
dc.date.available2026-07-07T06:30:11Z
dc.descriptionThe ground-state properties of the two-dimensional Hubbard model with nearest-neighbor and next-nearest-neighbor hoppings at half filling are studied by the path-integral-renormalization-group method. The nonmagnetic-insulator phase sandwiched by the the paramagnetic-metal phase and the antiferromagnetic-insulator phase shows evidence against translational symmetry breaking of the dimerized state, plaquette singlet state, staggered flux state, and charge ordered state. These results support that the genuine Mott insulator which cannot be adiabatically continued to the band insulator is realized generically by Umklapp scattering through the effects of geometrical frustration and quantum fluctuation in the two-dimensional system.
dc.description4 pages and 7 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0207550
dc.identifierhttp://arxiv.org/abs/cond-mat/0207550
dc.identifierJ. Phys. Soc. Jpn. 72 (2003) 2042
dc.identifierdoi:10.1143/JPSJ.72.2042
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98279
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleAbsence of Translational Symmetry Breaking in Nonmagnetic Insulator Phase on Two-Dimensional Lattice with Geometrical Frustration
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