講演題目: Bose-Einstein Condensation in Magnetic Insulators: Transport Signatures and Nonequilibrium Quantum Criticality
講師: So Takei 氏(Queens College of City University of New York, USA)
日時: 2025年7月22日(火) 13:10-14:10
場所: オンライン
要旨:
Magnetic insulators provide an ideal platform for studying Bose-
Einstein condensation (BEC), where magnetic fields control quasiparticle density and
enable studies of quantum criticality. In this talk, I explore the fascinating interplay
between driving forces, energy dissipation, and quantum coherence in these
systems. First, I will consider a driven dissipative magnetic insulator by coupling
the insulator to a metal with strong spin orbit coupling and discuss the effects of
nonequilibrium damping compensation on magnon transport. Time permitting, I’ll also show
how critical spin fluctuations generate strong quantum enhancement in
the magneto-conductivity in adjacent disordered metals. These results
highlight how spintronic devices can probe BEC-related phenomena.