QUANTIZED PHASE SLIPPAGE IN SUPERFLUID HE-4

被引：53

作者：

AMAR, A ^{[1
]}

SASAKI, Y ^{[1
]}

LOZES, RL ^{[1
]}

DAVIS, JC ^{[1
]}

PACKARD, RE ^{[1
]}

机构：

[1] ETEC, ELECTRON BEAM TECHNOL, HAWARD, CA 94545 USA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.68.2624

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied dissipative phase-slip events in the oscillatory superflow of He-4 through two different orifices of submicron size. The dissipation events are found to be caused by the phase difference across the orifice changing by 2-pi-n, where the slip integer n depends on the orifice geometry, flow direction, and temperature. The temperature dependence of the phase-slip critical velocity indicates that surface microstructure determines the magnitude of relevant energy barriers.

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页码：2624 / 2627

页数：4

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