Superfluid in a sentence

Tony Leggett won the 2003 Nobel Prize in Physics for his work on refining understanding of the superfluid phase of helium-3. citation In zero magnetic field, there are two distinct superfluid phases of 3 He, the A-phase and the B-phase.

Application of heat to a spot in superfluid helium results in a flow of the normal component which takes care of the heat transport at relatively high velocity (up to 20 cm/s) which leads to a very high effective thermal conductivity.

As long as it remains superfluid, it creeps up the wall of the cup as a thin film.

At the end sections a normal to superfluid conversion takes place and vice versa.

Below 1 K the helium is almost completely superfluid.

Bose–Einstein condensation remains, however, fundamental to the superfluid properties of helium-4.

Eq.(7) shows that the superfluid component is accelerated by gradients in the pressure and in the gravitational field, as usual, but also by a gradient in the fountain pressure.

Gaussian cluster approach This is a two-scale approach which describes the superfluid component of liquid helium-4.

Helium-3 also has a superfluid phase, but only at much lower temperatures; as a result, less is known about the properties of the isotope.

Helium II is a superfluid, a quantum mechanical state (see: macroscopic quantum phenomena ) of matter with strange properties.

He proposed a theoretical explanation of the superfluid properties of liquid helium in 1949; two years later the physicist Richard Feynman independently proposed the same theory.

However, the superfluid component can flow through this superleak without any problem (below a critical velocity of about 20 cm/s).

If the cause was internal, it suggests differential rotation of solid outer crust and the superfluid component of the inner of the magnetar's structure.

In contrast, the superfluid state of 4 He below 2.17 K is not a good example, because the interaction between the atoms is too strong.

Many of the defining characteristics of a superfluid arise from the notion that its quantum state is a superposition of states with different particle numbers.

Once the first critical angular velocity is reached, the superfluid will form a vortex.

One model describes the core as superfluid neutron-degenerate matter (mostly neutrons, with some protons and electrons).

Other proposed states Supersolid main A supersolid is a spatially ordered material (that is, a solid or crystal) with superfluid properties.

So, in many experiments, the fountain pressure has a bigger effect on the motion of the superfluid helium than gravity.

The examples where this could happen are the Bose–Fermi composite condensates, effectively lower-dimensional condensates, citation and dense condensates and superfluid clusters and droplets.