arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1302.0764cond-mat.other
收藏

拓扑超流3 He-B表面的重力波

Gravity waves on the surface of topological superfluid 3He-B

V. B. Eltsov, P. J. Heikkinen, V. V. Zavjalov

摘要:

在低于0.2mK的温度下,我们在~ 3 He-B样品的自由表面上观察到了波。波由低温恒温器的振动激发,并通过将表面耦合到超流体中的磁振子准粒子的玻色-爱因斯坦凝聚体来检测。我们的圆柱形容器中的两个最低的重力波模式被确定。正如预期的那样,波的阻尼随温度的增加与热准粒子的密度呈线性关系。此外,还观察到表面波在零温极限对磁振子凝聚体的有限阻尼和磁弛豫的增强。我们讨论后者的影响是否可能与马约拉纳费米子绑定到拓扑超流体的表面。

英文摘要:

We have observed waves on the free surface of 3He-B sample at temperatures below 0.2mK. The waves are excited by vibrations of the cryostat and detected by coupling the surface to the Bose-Einstein condensate of magnon quasiparticles in the superfluid. The two lowest gravity-wave modes in our cylindrical container are identified. Damping of the waves increases with temperature linearly with the density of thermal quasiparticles, as expected. Additionally finite damping of the waves in the zero-temperature limit and enhancement of magnetic relaxation of magnon condensates by the surface waves are observed. We discuss whether the latter effects may be related to Majorana fermions bound to the surface of the topological superfluid.

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。

↑