@inproceedings{oai:repo.qst.go.jp:00054960, author = {Shimada, Alisa and Sakai, Toru and Nakano, Hiroki and Yoshimura, Kazuyoshi and Sakai, Toru}, book = {Journal of Physics: Conference Series}, issue = {1}, month = {Apr}, note = {The spin-1/2 triangular-lattice Heisenberg antiferromagnet with a √3×√3-type distortion is studied by the numerical-diagonalization method. We examine this model between the two cases, one is the undistorted triangular lattice and the other is the model on the honeycomb lattice with isolated spins. When the distortion is controlled, we find a nontrivial region where the ground state shows spontaneous magnetizaion; the magnitude increases gradually as the distortion is larger and is smaller than one third of the saturation magnetization.}, pages = {012126-1--012126-6}, title = {Spontaneous Magnetization of the Spin-1/2 Heisenberg Antiferromagnet on the Triangular Lattice with a Distortion}, volume = {969}, year = {2018} }