Persistent coherent spin precession in superfluid 3He-B driven by off-resonant excitation

被引：23

作者：

Cousins, DJ ^{[1
]}

Fisher, SN ^{[1
]}

Gregory, AI ^{[1
]}

Pickett, GR ^{[1
]}

Shaw, NS ^{[1
]}

机构：

[1] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.82.4484

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In superfluid He-3-B under conditions of negligible normal fluid density we are able to trap a domain of coherent spin precession away from the destructive influence of boundaries. After the domain is generated by an NMR pulse, the free spin precession may continue for several minutes. Remarkably, we find that these precessing domains may also be generated by cw excitation but only at a frequency considerably higher than that of the precession. We believe that this behavior may indicate that at our temperatures the precessing spin is able to stimulate the orbital moment into sympathetic precession. [S0031-9007(99)09224-8].

引用

页码：4484 / 4487

页数：4