Polarized neutron scattering studies of magnetic excitations in iron-selenide superconductor (Li$_{0.8}$Fe$_{0.2}$)ODFeSe ($T_c$ = 41 K)

• Main Authors: Hu, Die, Feng, Yu, Park, Jitae T, Wo, Hongliang, Wang, Qisi, Bourdarot, Frederic, Ivanov, Alexandre, Zhao, Jun
• Format: Journal Article
• Language: English
• Published: 12.08.2021
• Subjects: Physics - Materials Science; Physics - Strongly Correlated Electrons; Physics - Superconductivity

We report polarized neutron scattering measurements of the low energy spin fluctuations of the iron-selenide superconductor Li$_{0.8}$Fe$_{0.2}$ODFeSe below and above its superconducting transition temperature $T_c=41$ K. Our experiments confirmed that the resonance mode near 21 meV is magnetic. Mor...