Mie University

most citedNonlinear Sigma model method for the J1-J2 Heisenberg model: disordered ground state with plaquette symmetry

62 citations

researchers with a paper here

Kazuhiro Sano2
Ira M. Gessel1
K. Takano1
Mamoru Yamashita1
Masashi Torikai1
Matthias Beck1
Takao Komatsu1
Takashi Nitta1
Tomoko Okada1
Yoshiaki Ōno1
Yoshiya Kito1
Yūichi Ono1

collaborating institutions

Nagoya UniversityJP3 papers
Binghamton UniversityUS1 paper
Brandeis UniversityUS1 paper
Toyota Technological InstituteJP1 paper

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cond-mat.str-el2003★ 62 cited

Nonlinear Sigma model method for the J1-J2 Heisenberg model: disordered ground state with plaquette symmetry

Ken'ichi Takano, Yoshiya Kito, Yoshiaki Ono +1

A novel nonlinear sigma model method is proposed for the two-dimensional J1-J2 model, which is extended to include plaquette-type distortion. The nonlinear sigma model is properly…

cond-mat.str-el2003

Magnetism and Superconductivity in a Two-band Hubbard Model in Infinite Dimensions

Y. Ono, K. Sano

We study a two-band Hubbard model using the dynamical mean-field theory combined with the exact diagonalization method. At the electron density $n = 2$ , a transition from a band-insu…