Twenty years of magnon Bose condensation and spin current superfluidity in 3He-B
G.E. Volovik
TL;DR
This paper reviews two decades of research on magnon Bose condensation and spin current superfluidity in superfluid 3He-B, highlighting key experimental discoveries and theoretical insights into quantum coherence phenomena.
Contribution
It provides a comprehensive overview of the development and understanding of magnon Bose condensation and spin superfluidity in superfluid 3He-B over 20 years.
Findings
Observation of spin current superfluidity in 3He-B
Identification of magnon Bose condensation as a quantum state
Evidence of off-diagonal long-range order in spin systems
Abstract
20 years ago a new quantum state of matter was discovered and identified. The observed dynamic quantum state of spin precession in superfluid 3He-B bears the properties of spin current superfluidity, Bose condensation of spin waves -- magnons, off-diagonal long-range order and related phenomena of quantum coherence
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