Two-Fluid Theory for Spin Superfluidity in Magnetic Insulators

We investigate coupled spin and heat transport in easy-plane magnetic insulators. These materials display a continuous phase transition between normal and condensate states that is controlled by an external magnetic field. Using hydrodynamic equations supplemented by Gross-Pitaevski phenomenology an...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2016-03, Vol.116 (11), p.117201-117201, Article 117201
Main Authors: Flebus, B, Bender, S A, Tserkovnyak, Y, Duine, R A
Format: Article
Language:English
Subjects:
Condensates
Insulators
Magnetic fields
Magnons
Mathematical models
Seebeck effect
Spin waves
Superfluidity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We investigate coupled spin and heat transport in easy-plane magnetic insulators. These materials display a continuous phase transition between normal and condensate states that is controlled by an external magnetic field. Using hydrodynamic equations supplemented by Gross-Pitaevski phenomenology and magnetoelectric circuit theory, we derive a two-fluid model to describe the dynamics of thermal and condensed magnons, and the appropriate boundary conditions in a hybrid normal-metal-magnetic-insulator-normal-metal heterostructure. We discuss how the emergent spin superfluidity can be experimentally probed via a spin Seebeck effect measurement.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.116.117201