CeCoIn5自旋共振的磁场分裂
Magnetic field splitting of the spin-resonance in CeCoIn5
摘要:
本文用强磁场中的中子散射证明了超导体CeCoIn_5(Tc= 2.3K)的自旋共振是一种二重态。欠阻尼共振(\hbar Γ=0.069 \pm 0.019 meV)塞曼分裂成两个模式,在E_{\pm} = \hbar Ω_{0} \pm gμ_{B} μ_{0}H,g=0.96 \pm 0.05。下峰的线性外推在11.2 \pm 0.5 T处达到零能量,接近无公度“Q相”的临界场,表明Q相是自旋激子的玻色凝聚体。
英文摘要:
Neutron scattering in strong magnetic fields is used to show the spin-resonance in superconducting CeCoIn5 (Tc=2.3 K) is a doublet. The underdamped resonance (\hbar Γ=0.069 \pm 0.019 meV) Zeeman splits into two modes at E_{\pm}=\hbar Ω_{0}\pm gμ_{B} μ_{0}H with g=0.96 \pm 0.05. A linear extrapolation of the lower peak reaches zero energy at 11.2 \pm 0.5 T, near the critical field for the incommensurate "Q-phase" indicating that the Q-phase is a bose condensate of spin excitons.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。