On supercurrents in Bose-Einstein magnon condensates in YIG ferrimagnet

TL;DR

This paper defends the experimental detection of spin supercurrents in Bose-Einstein magnon condensates in YIG ferrimagnet against critical comments, providing supporting experimental data and theoretical analysis.

Contribution

It provides a detailed response confirming the validity of observed magnon supercurrents with experimental and theoretical support.

Findings

Experimental results support the existence of magnon supercurrents.

Theoretical analysis corroborates the experimental interpretation.

The claim of detecting spin supercurrents is validated.

Abstract

Recently E. Sonin commented [1] on our preprint "Supercurrent in a room temperature Bose-Einstein magnon condensate" [2,3], arguing that our "claim of detection of spin supercurrent is premature and has not been sufficiently supported by presented experimental results and their theoretical interpretation." We consider the appearance of this Comment as a sign of significant interest into the problem of supercurrents in Bose-Einstein magnon condensates. Here, we explicitly address E. Sonin's comments and show that our interpretation of our experimental results as a detection of a magnon supercurrent is fully supported not only by the experimental results themselves, but also by independent theoretical analysis [4].