تقرير
Dipolar order controls dielectric response of glass-forming liquids
| العنوان: | Dipolar order controls dielectric response of glass-forming liquids |
|---|---|
| المؤلفون: | Böhmer, Till, Pabst, Florian, Gabriel, Jan P., Blochowicz, Thomas |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Soft Condensed Matter, Condensed Matter - Disordered Systems and Neural Networks |
| الوصف: | The dielectric response of liquids reflects both, reorientation of single molecular dipoles and collective modes, i.e., dipolar cross-correlations. A recent theory predicts the latter to produce an additional slow peak in the dielectric loss spectrum. Following this idea we argue that in supercooled liquids the high-frequency power law exponent of the dielectric loss $\beta$ should be correlated with the degree of dipolar order, i.e., the Kirkwood correlation factor $g_K$. This notion is confirmed for 25 supercooled liquids. While our findings support recent theoretical work the results are shown to violate the earlier Kivelson-Madden theory. Comment: To appear in Phys. Rev. Lett |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2404.14277 |
| رقم الأكسشن: | edsarx.2404.14277 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |