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Resonant inelastic x-ray scattering probes the electron-phonon coupling in the spin liquidκ-(BEDT-TTF)2Cu2(CN)3
Physical Review B ( IF 3.2 ) Pub Date : 2017-11-17 00:00:00 , DOI: 10.1103/physrevb.96.184303
V. Ilakovac , S. Carniato , P. Foury-Leylekian , S. Tomić , J.-P. Pouget , P. Lazić , Y. Joly , K. Miyagawa , K. Kanoda , A. Nicolaou

Resonant inelastic x-ray scattering at the N K edge reveals clearly resolved harmonics of the anion plane vibrations in the κ-(BEDT-TTF)2Cu2(CN)3 spin-liquid insulator. Tuning the incoming light energy at the K edge of two distinct N sites permits us to excite different sets of phonon modes. The cyanide (CN) stretching mode is selected at the edge of the ordered N sites which are more strongly connected to the bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) molecules, while positionally disordered N sites show multimode excitation. Combining measurements with calculations on an anion plane cluster permits us to estimate the site-dependent electron-phonon coupling of the modes related to nitrogen excitation.

中文翻译:

共振非弹性X射线散射探测自旋液体κ-(BEDT-TTF)2Cu2(CN)3中的电子-声子耦合

N处的共振非弹性X射线散射 ķ 边缘揭示了阴离子平面中振动的清晰分解的谐波 κ-(BEDT-特遣队2个2个CN3自旋液体绝缘体。调整入射光的能量ķ两个不同的N位点的边缘允许我们激发不同的声子模式集。在有序的N位点的边缘选择氰化物(CN)拉伸模式,该N位点的位置与双(亚乙基二硫代)四硫富瓦烯(BEDT-TTF)分子更牢固地连接,而位置无序的N位点显示出多模激发。将测量结果与阴离子平面簇上的计算结果相结合,使我们能够估计与氮激发有关的模式的与位置有关的电子-声子耦合。
更新日期:2017-11-17
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