In:
Condensed Matter, MDPI AG, Vol. 4, No. 3 ( 2019-07-12), p. 69-
Abstract:
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.
Type of Medium:
Online Resource
ISSN:
2410-3896
DOI:
10.3390/condmat4030069
Language:
English
Publisher:
MDPI AG
Publication Date:
2019
detail.hit.zdb_id:
2877004-3
Permalink