SCENARIO FOR A QUANTUM PHASE-SLIP IN SUPERFLUID HE-4

被引：24

作者：

BURKHART, S ^{[1
]}

BERNARD, M ^{[1
]}

AVENEL, O ^{[1
]}

VAROQUAUX, E ^{[1
]}

机构：

[1] UNIV PARIS 11,PHYS SOLIDES LAB,F-91405 ORSAY,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.72.380

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Slips of the superfluid wave-function phase occur when the flow velocity through an aperture exceeds a critical threshold v(c). We propose a phase slip mechanism in which a microscopic vortex half ring is nucleated at the wall of the aperture. Its subsequent trajectory is described. The properties of the vortex close to the wall are inferred from the Gross-Pitaevskii equation and yield, at T approximately 0.1 K, a vortex radius at nucleation of 14 angstrom and a critical velocity of 21 m/s, in agreement with experiment.

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页码：380 / 383

页数：4

相关论文

共 38 条

[1] QUANTIZED PHASE SLIPPAGE IN SUPERFLUID HE-4 [J].

AMAR, A ;

SASAKI, Y ;

LOZES, RL ;

DAVIS, JC ;

PACKARD, RE .

PHYSICAL REVIEW LETTERS, 1992, 68 (17) :2624-2627

[2] CONSIDERATIONS ON FLOW OF SUPERFLUID HELIUM [J].

ANDERSON, PW .

REVIEWS OF MODERN PHYSICS, 1966, 38 (02) :298-&

[3]

[Anonymous], 1955, PROGR LOW TEMPERATUR, DOI DOI 10.1016/S0079-6417(08)60077-3

[4] OBSERVATION OF SINGLY QUANTIZED DISSIPATION EVENTS OBEYING THE JOSEPHSON FREQUENCY RELATION IN THE CRITICAL FLOW OF SUPERFLUID HE-4 THROUGH AN APERTURE [J].

AVENEL, O ;

VAROQUAUX, E .

PHYSICAL REVIEW LETTERS, 1985, 55 (24) :2704-2707

[5] VARIATION OF THE CRITICAL ORDER-PARAMETER PHASE DIFFERENCE WITH TEMPERATURE FROM 0.4 TO 1.9 K IN THE FLOW OF SUPERFLUID HE-4 THROUGH A TINY ORIFICE [J].

BEECKEN, BP ;

ZIMMERMANN, W .

PHYSICAL REVIEW B, 1987, 35 (04) :1630-1635

[6] SEARCH FOR AN AC JOSEPHSON EFFECT IN SUPERFLUID HE-4 USING A LOW-FREQUENCY ACOUSTIC RESONATOR [J].

BEECKEN, BP ;

ZIMMERMANN, W .

PHYSICAL REVIEW B, 1987, 35 (01) :74-88

[7] HYDRODYNAMICS OF VORTEX GENERATION IN FLOWING SUPERFLUID-HELIUM [J].

BLOUNT, EI ;

VARMA, CM .

PHYSICAL REVIEW B, 1976, 14 (07) :2888-2899

[8] VORTICES IN 2-D AND 3-D SUPERFLUIDS [J].

BOWLEY, RM .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1992, 87 (3-4) :137-196

[9]

Brewer D. F., 1966, QUANTUM FLUIDS, P74

[10] EVIDENCE FOR QUANTUM TUNNELING OF PHASE-SLIP VORTICES IN SUPERFLUID HE-4 [J].

DAVIS, JC ;

STEINHAUER, J ;

SCHWAB, K ;

MUKHARSKY, YM ;

AMAR, A ;

SASAKI, Y ;

PACKARD, RE .

PHYSICAL REVIEW LETTERS, 1992, 69 (02) :323-326

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