@inproceedings{oai:repo.qst.go.jp:00054877,
 author = {Sakai, T. and Nakano, H. and 坂井 徹},
 book = {Journal of Physics. Conference Series},
 issue = {1},
 month = {Jul},
 note = {The S=1/2 kagome-lattice antiferromagnet is investigated using the numerical diagonalization up to the 42-spin cluster. The analysis of the field derivative of the magnetization at the zero magnetization indicates that the magnetic excitation ot the system is gapless. It is consistent with our previous finite-scaling analysis of the spin gap.},
 pages = {012006-1--012006-10},
 publisher = {IOP Publishing},
 title = {Quantum Spin Liquid in the Kagome-Lattice Antiferromagnet and Related Systems},
 volume = {868},
 year = {2017}
}