NMR in Commensurate and Incommensurate Spin Density Waves
NMR in Commensurate and Incommensurate Spin Density Waves
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相称和不相称自旋密度波中的核磁共振
DOI：
10.1209/0295-5075/21/1/015
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发表时间：
1993
期刊：
影响因子：
1.8
通讯作者：
K. Bechgaard
中科院分区：
文献类型：
--
作者：
E. Barthel;G. Quirion;P. Wzietek;D. Jérome;J. B. Christensen;M. Jørgensen;K. Bechgaard
本文报道了（TMTTF）2Br和（TMTSF）2 PF 6在自旋密度波（SDW）态下的~（13）C NMR谱线和自旋晶格弛豫测量结果。我们证实（TMTSF）2 PF 6具有无公度的SDW，并表明相位子模式在弛豫中占主导地位。我们证明了（TMTTF）2Br是公度的，并估计了SDW的振幅.在该化合物中没有观察到相子对弛豫的贡献。理论的影响进行了讨论。
We present 13C NMR lineshapes and spin lattice relaxation measurements of (TMTTF)2Br and (TMTSF)2PF6 in the spin density wave (SDW) state. We confirm that (TMTSF)2PF6 has an incommensurate SDW and show that the phason mode is dominant in the relaxation. We prove that (TMTTF)2Br is commensurate and estimate the SDW amplitude. No phason contribution to the relaxation is observed in this compound. The implications for theory are discussed.