تقرير
Observation of suppressed viscosity in the normal state of $^3$He due to superfluid fluctuations
| العنوان: | Observation of suppressed viscosity in the normal state of $^3$He due to superfluid fluctuations |
|---|---|
| المؤلفون: | Baten, Rakin N., Tian, Yefan, Smith, Eric N., Mueller, Erich, Parpia, Jeevak M. |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity |
| الوصف: | By monitoring the quality factor of a quartz tuning fork oscillator we have observed a fluctuation-driven reduction in the viscosity of bulk $^3$He in the normal state near the superfluid transition temperature, $T_c$. These fluctuations, which are only found within $100 \mu$K of $T_c$, play a vital role in the theoretical modeling of ordering; they encode details about the Fermi liquid parameters, pairing symmetry, and scattering phase shifts. They will be of crucial importance for transport probes of the topologically nontrivial features of superfluid $^3$He under strong confinement. Here we characterize the temperature and pressure dependence of the fluctuation signature, finding data collapse consistent with the predicted theoretical behavior. Comment: 5 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2212.12520 |
| رقم الأكسشن: | edsarx.2212.12520 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |