论文标题
磁场对FESE中子自旋共振的各向异性效应
Anisotropic effect of a magnetic field on the neutron spin resonance in FeSe
论文作者
论文摘要
我们使用非弹性中子散射来研究磁场对超导FESE（TC = 9 K）的中子自旋共振（ER = 3.6 MeV）的影响。沿沿平面方向对齐的磁场扩大并抑制共振，而C轴对齐场的作用更为有效，这与各向异性场诱导的抑制热容量测量值对超流体密度的抑制一致。这些结果表明，FESE的共振与孔和电子费米表面之间的轨道选择性准粒子激发产生的超导电子有关。
We use inelastic neutron scattering to study the effect of a magnetic field on the neutron spin resonance (Er = 3.6 meV) of superconducting FeSe (Tc = 9 K). While a field aligned along the in-plane direction broadens and suppresses the resonance, a c-axis aligned field does so much more efficiently, consistent with the anisotropic field-induced suppression of the superfluid density from the heat capacity measurements. These results suggest that the resonance in FeSe is associated with the superconducting electrons arising from orbital selective quasi-particle excitations between the hole and electron Fermi surfaces.
