ROTATIONAL COUPLING OF THE PINNED CORE SUPERFLUID

Coupling of Confined Superfluid Helium

Early measurements of the specific heat of liquid helium confined in all three spatial dimensions suggest a coupling of individual regions of superfluid via connecting channels. Preliminary measurements have been made to investigate this apparent coupling. Although more data need to be collected before anything conclusive can be said, the available data support the idea that behavior of helium ...

Superfluid optomechanics: coupling of a superfluid to a superconducting condensate

We investigate the low loss acoustic motion of superfluid He parametrically coupled to a very low loss, superconducting Nb TE011 microwave resonator, forming a gram-scale, sideband resolved, optomechanical system. We demonstrate the detection of a series of acoustic modes with quality factors as high as × 1.4 107. At higher temperatures, the lowest dissipation modes are limited by an intrinsic ...

Relaxation of the Wall-Pinned Magnetization Ringing Mode in Superfluid 3He-B

Giant Proximity Effect and Coupling in Superfluid

Previous measurements of the specific heat of helium-4 (4He) confined in all three spatial dimensions suggested a coupling between neighbor ing confinements through the tiny channels used to fill them [1]. Measurements of the superfluid fraction in the filling channels also suggested an enhancement attributed to their proximity to the larger regions of superfluid [1]. Recent measurements of con...

STRONG-COUPLING ORBITAL IN SUPERFLUID 3He-A

The theory is proposed for a new orbital mode in superfluid He-A for which strong-coupling effects are essential. A phenomenological picture of this mode is given. The connection with experimentally observable effects is sketched. It is by now widely believed that superfluid He-A is to be identified with the so-called ABM phase /1,2/ where pairing takes place between He atoms with parallel spin...