Coherent spin precession in superfluid 3He-B excited in a field minimum at low temperatures.

被引:2
作者
Fisher, SN
Guénault, AM
Matthews, CJ
Skyba, P
Pickett, GR
Zaki, KL
机构
[1] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England
[2] Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia
基金
英国工程与自然科学研究理事会;
关键词
LIVED INDUCTION SIGNAL; DYNAMICS; DOMAIN;
D O I
10.1007/s10909-005-2302-3
中图分类号
O59 [应用物理学];
学科分类号
摘要
The persistent precessing domain (PPD) is an isolated region of coherent spin precession which is observed in the B phase of superfluid He-3 at the lowest achievable temperatures. It has many unusual properties and its free decay can exceed 1000 s at the lowest temperatures. Previous observations of the PPD were highly irreproducible but we now find the PPD to be very reproducible when there is a field minimum along the cell axis. Here we discuss measurements of the PPD as we control the magnetic field profile, allowing the depth of the minimum to be adjusted.
引用
收藏
页码:777 / 782
页数:6
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