title: Orbital occupancy and charge doping in iron-based superconductors.
abstract: The intrinsic Fe local magnetic moment and Fe orbital occupations of iron-based superconductors are unveiled through the local, real-space capability of aberration-corrected scanning transmission electron microscopy/electron energy loss spectroscopy (STEM/EELS). Although the ordering of Fe moments needs to be suppressed for superconductivity to arise, the local, fluctuating Fe magnetic moment is enhanced near optimal superconductivity.
authors: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors: Claudia
authors: C
authors: Cantoni
authors: Jonathan E
authors: JE
authors: Mitchell
authors: Andrew F
authors: AF
authors: May
authors: Michael A
authors: MA
authors: McGuire
authors: Juan-Carlos
authors: JC
authors: Idrobo
authors: Tom
authors: T
authors: Berlijn
authors: Elbio
authors: E
authors: Dagotto
authors: Matthew F
authors: MF
authors: Chisholm
authors: Wu
authors: W
authors: Zhou
authors: Stephen J
authors: SJ
authors: Pennycook
authors: Athena S
authors: AS
authors: Sefat
authors: Brian C
authors: BC
authors: Sales
keywords: electron energy loss spectroscopy (EELS); iron-based superconductors; local magnetic moments; scanning transmission electron microscopy (STEM)