TY - JOUR
T1 - Q dependence of magnetic resonance mode on FeTe0.5Se0.5 studied by inelastic neutron scattering
AU - Ishikado, Motoyuki
AU - Kodama, Katsuaki
AU - Kajimoto, Ryoichi
AU - Nakamura, Mitsutaka
AU - Inamura, Yasuhiro
AU - Ikeuchi, Kazuhiko
AU - Ji, Sungdae
AU - Arai, Masatoshi
AU - Shamoto, Shin Ichi
N1 - Publisher Copyright:
© 2019 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2019/9
Y1 - 2019/9
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/85172083374
UR - https://www.scopus.com/pages/publications/85172083374#tab=citedBy
U2 - 10.3390/condmat4030069
DO - 10.3390/condmat4030069
M3 - Article
AN - SCOPUS:85172083374
SN - 2410-3896
VL - 4
JO - Condensed Matter
JF - Condensed Matter
IS - 3
M1 - 69
ER -