# Plasticity induced superclimb in solid Helium-4: Direct and inverse effects

## TL;DR

This paper investigates the relationship between superclimbing and basal dislocations in solid Helium-4, proposing that they can form bound pairs and that plastic deformation influences superfluid transport, with implications for understanding the syringe effect.

## Contribution

It introduces the concept that superclimbing and basal dislocations can form bound pairs, linking plasticity to superfluid transport in solid Helium-4.

## Key findings

- Superclimbing and basal dislocations can form bound pairs.
- Plastic deformation can induce the syringe effect.
- Supercurrents flow perpendicular to plastic deformation.

## Abstract

During the last decade experimental evidence is building that the mass supertransport through solid Helium-4 as well as the anomalously large matter accumulation in the bulk -- the giant isochoric compressibility (aka the syringe effect) -- are both supported by a network of dislocations with superfluid core. However, a structure of this network as well as its relation to the basal (non-superfluid) dislocations which are responsible for plasticity remain unclear. Here it is shown that superclimbing and basal edge dislocations can form bound pairs. This implies that plastic deformation should produce the syringe effect and vice versa. The experimental test is proposed. While the strength of the effect depends on the average orientation of the paired dislocations, there is a feature unique for the superfluid dislocation scenario -- the supercurrents flow in the direction perpendicular to the plastic deformation.