NMR study on the competing spin chain Rb₂Cu₂Mo₃O₁₂

Rb-NMR study of the quasi-one-dimensional competing spin-chain compound Rb2Cu2Mo3Matsui1, Yagi2, Hoshino3 et al. 2017Phys. Rev. B164150View full textAdd to dashboardCite

“…[18,19]. In this paper, we focus on the intermediate field region, where the system is gapless, to investigate TLL and the field induced magnetic order.…”

“…87 Rb-NMR ( = 3 2 , = 13.928 ) measurements were performed on the powder sample in the field region from 2 to 12 T, and in the temperature range from 0.3 to 20 K. We will combine our previous data above 12 T and below 2 T, which were already published [18]. The NMR spectra were obtained by plotting the spin-echo amplitude against the applied field.…”

“…by the scaling between the temperature dependence of macroscopic susceptibility and that of Knight shift [18]. The temperature dependence of the line width (FWHM) was also scaled with to obtain the anisotropic part of the hyperfine coupling as 3 an = 0.045T B ⁄ .…”

Ground State of Quasi-One Dimensional Competing Spin Chain Cs2Cu2Mo3O12 at zero and Finite Fields

“…The ground state of the competing-spin chain R 2 Cu 2 Mo 3 O 12 [1,2] has attracted much interest, not only for the possibility of spin nematic state [3][4][5][6][7][8][9][10][11], but because the two isomorphic compounds with R= Cs and Rb show different ground states [11][12][13][14]. While the former shows a magnetic order at T N = 1.8 K, the latter shows a small spin gap of /k B = 1.6K.…”

“…For the existence of magnetic order itself has been confirmed both by thermodynamic and microscopic probes [11][12][13][14], we utilize LF-SR method and focus on the point if the ordered state bears the dynamical spin fluctuation.…”