Observation of suppressed viscosity in the normal state of 3He due to superfluid fluctuations

被引：1

作者：

Baten, Rakin N. ^{[1
]}

Tian, Yefan ^{[1
]}

Smith, Eric N. ^{[1
]}

Mueller, Erich J. ^{[1
]}

Parpia, Jeevak M. ^{[1
]}

机构：

[1] Cornell Univ, Dept Phys, Ithaca, NY 14853 USA

来源：

NATURE COMMUNICATIONS | 2023年 / 14卷 / 01期

基金：

美国国家科学基金会;

关键词：

ZERO-SOUND-ATTENUATION; INCIPIENT SUPERFLUIDITY; THERMAL-CONDUCTIVITY; LIQUID-HE-3; TRANSITION; HEAT; RELAXATION; FREQUENCY; TRANSPORT; HELIUM;

D O I：

10.1038/s41467-023-41422-3

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Evidence of fluctuations in transport have long been predicted in He-3. They are expected to contribute only within 100 mu K of T-c and play a vital role in the theoretical modeling of ordering; they encode details about the Fermi liquid parameters, pairing symmetry, and scattering phase shifts. It is expected that they will be of crucial importance for transport probes of the topologically nontrivial features of superfluid He-3 under strong confinement. Here we characterize the temperature and pressure dependence of the fluctuation signature, by monitoring the quality factor of a quartz tuning fork oscillator. We have observed a fluctuation-driven reduction in the viscosity of bulk He-3, finding data collapse consistent with the predicted theoretical behavior.

引用

页数：6

共 47 条

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