用中子自旋回波谱测量量子磁体中的反常热退相干
Anomalous thermal decoherence in a quantum magnet measured with neutron spin-echo spectroscopy
摘要：
利用高分辨中子共振自旋回波（NRSE）技术研究了一维键交替海森堡链模型材料Cu（NO $_3$）$_2\cdot$ 2.5 D $_2$ O中的非对称谱线展宽效应.非弹性中子散射实验的色散激发，包括相敏测量表明NRSE解决线的形状，这是非洛伦兹，开辟了一个新的和迄今为止未探索的实验类的NRSE方法超出标准的线宽测量的潜力。NRSE的特别优点是其直接访问时域中的相关性，而无需与背景光谱仪的分辨率函数进行卷积。这种新的应用NRSE是非常有前途的，并建立了一个基础，为进一步的实验在不同的系统，因为结果的Cu（NO $_3$）$_2\cdot$ 2.5 D $_2$ O适用于广泛的量子系统。
英文摘要：
The effect of temperature dependent asymmetric line broadening is investigated in Cu(NO$_3$)$_2\cdot$2.5D$_2$O, a model material for a 1-D bond alternating Heisenberg chain, using the high resolution neutron-resonance spin-echo (NRSE) technique. Inelastic neutron scattering experiments on dispersive excitations including phase sensitive measurements demonstrate the potential of NRSE to resolve line shapes, which are non-Lorentzian, opening up a new and hitherto unexplored class of experiments for the NRSE method beyond standard line width measurements. The particular advantage of NRSE is its direct access to the correlations in the time domain without convolution with the resolution function of the background spectrometer. This novel application of NRSE is very promising and establishes a basis for further experiments on different systems, since the results for Cu(NO$_3$)$_2\cdot$2.5D$_2$O are applicable to a broad range of quantum systems.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
