High-energy spin fluctuation in low-T_c iron-based superconductor LaFePO_0.9.

ABSTRACT: Spin fluctuations are widely believed to play an important role in the superconducting mechanisms of unconventional high temperature superconductors. Spin fluctuations have been observed in iron-based superconductors as well. However, in some iron-based superconductors such as LaFePO_0.9, they have not been observed by inelastic neutron scattering (INS). LaFePO_0.9 is an iron-based superconductor with a low superconducting transition temperature (T_c = 5 K), where line nodes are observed in the superconducting gap function. The line-node symmetry typically originates from sign reversal of the order parameter in spin-fluctuation-mediated superconductivity. This contradiction has been a long-standing mystery of this superconductor. Herein, spin fluctuations were

SUBMITTER: Ishikado M 

PROVIDER: S-EPMC6218523 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature