Longitudinal spin diffusion in a nondegenerate trapped ${}^{87}$Rb gas

Abstract

Longitudinal spin diffusion of two pseudo-spin domains is studied in a trapped ${}^{87}$Rb sample above quantum degeneracy, and the effect of coherence in the domain wall on the dynamics of the system is investigated. Coherence in a domain wall leads to transverse-spin-mediated longitudinal spin diffusion that is slower than classical predictions, as well as altering the domains' oscillation frequency. The system also shows an instability in the longitudinal spin dynamics as longitudinal and transverse spin components couple, and a conversion of longitudinal spin to transverse spin is observed, resulting in an increase in the total amount of coherence in the system.

References in corpus (5)

• Far-from-equilibrium spin transport in Heisenberg quantum magnets
• Transverse Demagnetization Dynamics of a Unitary Fermi Gas
• Universal spin dynamics in two-dimensional Fermi gases
• Observation of the Leggett-Rice effect in a unitary Fermi gas
• Spin Diffusion in Trapped Gases: Anisotropy in Dipole and Quadrupole Modes

Cited by in corpus (5)

• Universal Spin Transport and Quantum Bounds for Unitary Fermions
• Dynamics of interacting fermions in spin-dependent potentials
• Normal-Superfluid Phase Separation in Spin-Half Bosons at Finite Temperature
• Superfluidity and spin superfluidity in spinor Bose gases
• Stable spin domains in a non-degenerate ultra-cold gas