STAIRCASE PATTERN IN A SUPERFLUID HE-II TORSIONAL-OSCILLATOR ANALOG OF THE RADIOFREQUENCY SQUID

被引：7

作者：

BONALDI, M

CERDONIO, M

DOLESI, R

VITALE, S

机构：

[1] UNIV TRENT,DIPARTIMENTO FIS,I-38050 TRENT,ITALY

[2] IST NAZL FIS NUCL,GRP COLL TRENTO,I-38050 TRENT,ITALY

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.49.1528

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We are developing a superfluid He-4 analog of the rf SQUID. A thin partition with a micrometric orifice is placed inside a toroidal container filled with liquid helium; ac and de superflows through the orifice are induced by rotating the whole torus, which is the inertial member of a torsional oscillator. The torus oscillation amplitude vs drive curve shows a small but reproducible staircase pattern, which is detectable between 1.4 and 2.05 K, but is not modulated by a superimposed steady rotation. We discuss this behavior in terms of the occurrence of multiple phase slips.

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页码：1528 / 1531

页数：4

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