@article{oai:muroran-it.repo.nii.ac.jp:00010281,
 author = {DING, Qingping and 川村, 幸裕 and NISHINE, Kohei and 西根, 康平 and 川村,  幸裕 and KAWAMURA, Yukihiro and 林, 純一 and HAYASHI, Junichi and 関根,  ちひろ and SEKINE, Chihiro and FURUKAWA, Yu},
 issue = {5},
 journal = {PHYSICAL REVIEW B},
 month = {},
 note = {application/pdf, Motivated by the recent observation of ferromagnetic spin correlations in the filled skutterudite SrFe4As12 [Q.-P. Ding et al., Phys. Rev. B 98, 155149 (2018)], we have carried out As-75 nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements to investigate the role of magnetic fluctuations in the newly discovered isostructural superconductor SrOs4As12 with a superconducting transition temperature of T-c similar to 4.8 K. Knight shift K determined by the NQR spectrum under a small magnetic field (<= 0.5 T) is nearly independent of temperature, consistent with the temperature dependence of the magnetic susceptibility. The nuclear spin-lattice relaxation rate divided by temperature, 1/T1T, is nearly independent of temperature above similar to 50 K and increases slightly with decreasing temperature below the temperature. The temperature dependence is reasonably explained by a simple model where a flat band structure with a small ledge near the Fermi energy is assumed. By comparing the present NMR data with those in SrFe4As12, we found that the values of vertical bar K vertical bar and 1/T1T in SrOs4As12 are smaller than those in SrFe4As12, indicating no obvious ferromagnetic spin correlations in SrOs4As12. From the temperature dependence of 1/T-1 in the superconducting state, an s-wave superconductivity is realized.},
 title = {Suppression of ferromagnetic spin fluctuations in the filled skutterudite superconductor SrOs4As12 revealed by As-75 NMR-NQR measurements},
 volume = {100},
 year = {2019},
 yomi = {ニシネ, コウヘイ and カワムラ, ユキヒロ and ハヤシ, ジュンイチ and セキネ, チヒロ}
}