Low-frequency single-molecule dynamics in incommensurate biphenyl.
Low-frequency single-molecule dynamics in incommensurate biphenyl.
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不相称联苯的低频单分子动力学。
DOI：
10.1103/physrevb.51.8753
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Coddens
中科院分区：
文献类型：
--
作者：
Étrillard;Toudic;Cailleau;Coddens
报道了联苯无公度相变的非相干中子散射研究。实验结果表明，在接近位移跃迁和无公度相的情况下，态的赝密度的低能部分都偏离了德拜定律。对相关谱自相关函数的分析使我们重新审视对核磁共振结果的解释，为了估计相子分支中的能隙的真实值，核自旋i=1/2且大于1/2。
An incoherent-neutron-scattering study of the incommensurate phase transition in biphenyl is reported. Experimental results show a departure from the Debye law in the low-energy part of the pseudodensity of states both on approaching the displacive transition and in the incommensurate phase. The analysis of the associated spectral autocorrelation function leads us to reexamine the interpretation of nuclear-magnetic-resonance results, nuclei having spin I= 1/2 and above 1/2, in order to estimate the real values for the gap in the phason branch.