並列タイトル等1H-NMR Study of Quantum Spin-Ladder System (CPA)2CuBr4
一般注記Spin dynamics on a quantum spin-ladder system (CPA)2CuBr4 was studied by 1H-NMR experiments in the temperature range down to 0.5 K. (CPA)2CuBr4 is the first model compound in which exchange interaction of the rail direction is stronger than that of rung direction. We have found an activation-type behavior of the proton relaxation rate 1/T1 at low magnetic field region, which is an evidence of the existence of the spin gap. The behavior of 1/T1 ~ T-? observed at high fields suggests a Tomonaga-Luttinger liquid state. Further decreasing temperature, 1/T1 turned to decrease below about 2 K. The specific heat measurements under the field up to 12 T suggests no long-range order down to 0.5 K. Our results are compared with other “dimer-like" quantum spin-ladder system and discussed with the H-T phase diagram.
一次資料へのリンクURLhttps://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=27199&item_no=1&attribute_id=22&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)