title: Adsorption-induced switching of magnetic anisotropy in a single iron(II) phthalocyanine molecule on an oxidized Cu(110) surface.
abstract: We examined the zero-field splitting of an iron(II) phthalocyanine (FePc) attached to clean and oxidized Cu(110) surfaces and the dependence on an applied magnetic field by inelastic electron tunneling spectroscopy with STM. The symmetry of the ligand field surrounding the Fe atom is lowered on the oxidized surface, switching the magnetic anisotropy from the easy plane of the bulk to the easy axis. The zero-field splitting was not observed for FePc on a clean Cu(110) surface, and the spin state converts from triplet to singlet due to the strong coupling of Fe d states with the Cu substrate, as is also confirmed by photoelectron spectroscopy. These findings demonstrate the importance of coupling at the molecule-substrate interface for manipulating the magnetic properties of adsorbates.
authors.affiliation: Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan.
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Tsukahara
authors.forename: Ken-Ichi
authors.initials: K
authors.lastname: Noto
authors.forename: Michiaki
authors.initials: M
authors.lastname: Ohara
authors.forename: Susumu
authors.initials: S
authors.lastname: Shiraki
authors.forename: Noriaki
authors.initials: N
authors.lastname: Takagi
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Takata
authors.forename: Jun
authors.initials: J
authors.lastname: Miyawaki
authors.forename: Munetaka
authors.initials: M
authors.lastname: Taguchi
authors.forename: Ashish
authors.initials: A
authors.lastname: Chainani
authors.forename: Shik
authors.initials: S
authors.lastname: Shin
authors.forename: Maki
authors.initials: M
authors.lastname: Kawai