Journal
PHYSICAL REVIEW LETTERS
Volume 116, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.117201
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Funding
- Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- program of the Netherlands Organisation for Scientific Research (NWO) - Dutch Ministry of Education, Culture and Science (OCW)
- NSF [DMR-1420451]
- US DOE-BES [DE-SC0012190]
- D-ITP consortium
- U.S. Department of Energy (DOE) [DE-SC0012190] Funding Source: U.S. Department of Energy (DOE)
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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.
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