2019年7月12日
Q Dependence of Magnetic Resonance Mode on FeTe0.5Se0.5 Studied by Inelastic Neutron Scattering
Condensed Matter
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- 巻
- 4
- 号
- 3
- 開始ページ
- 69
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(国際会議プロシーディングス)
- DOI
- 10.3390/condmat4030069
- 出版者・発行元
- MDPI AG
Inelastic neutron scattering measurements have been performed on a superconducting single crystal FeTe 0.5 Se 0.5 to examine the Q -dependent enhancement of the dynamical structure factor, S ( Q , E ) , from Q = (0, 0) to ( π , π ), including ( π , 0) in the superconducting state. In most of iron-based superconductors, S ( Q , E ) is enhanced at Q = ( π , 0), where the “magnetic resonance mode” is commonly observed in the unfolded Brillouin zone. Constant-E cuts of S ( Q , E ) suggest that the enhancement is not uniform in the magnetic excitation, and limited around Q = ( π , 0). This result is consistent with the theoretical simulation of the magnetic resonance mode due to the Bardeen–Cooper–Schrieffer coherence factor with the sign-reversing order parameter of s ± wave.
- ID情報
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- DOI : 10.3390/condmat4030069
- eISSN : 2410-3896
- ORCIDのPut Code : 59431994