Day / Time
Date(s) - 25/04/2017
13 h 00 min - 14 h 00 min
Condensation and superfluidity in magnetic insulators
“Two-fluid” spin dynamics in magnetic insulators, which stands broadly for the interplay between the coherent and incoherent degrees of freedom, is attracting a growing interest in the fields of spintronics and nonequilibrium magnetism. I will review recent developments, both theoretical and experimental, including the problems of (1) thermoelectric pumping of magnonic condensates, (2) two-fluid theory of spin superfluidity and its spin Seebeck signatures, and (3) coherent control and detection of the spin chemical potential, all within a unified framework of nonequilibrium thermodynamics. At the core of the discussion will be quantum transport of heat and spin at interfaces and dynamic phase transitions associated with spontaneous coherence in the bulk.