Controlling the Spin States of FeTBrPP on Au(111)
Xiangzhi Meng, Jenny Möller, Masoud Mansouri, Daniel Sánchez‐Portal, Aran García-Lekue, Alexander Weismann, Chao Li, Rainer Herges, Richard Berndt
Abstract
Spin-flip excitations of iron porphyrin molecules on Au(111) are investigated with a low-temperature scanning tunneling microscope. The molecules adopt two distinct adsorption configurations on the surface that exhibit different magnetic anisotropy energies. Density functional theory calculations show that the different structures and excitation energies reflect unlike occupations of the Fe 3d levels. We demonstrate that the magnetic anisotropy energy can be controlled by changing the adsorption site, the orientation, or the tip-molecule distance.
Topics & Concepts
Scanning tunneling microscopeMoleculeDensity functional theoryExcitationAnisotropySpin (aerodynamics)AdsorptionMaterials scienceCondensed matter physicsMagnetic anisotropySpin polarized scanning tunneling microscopyQuantum tunnellingOrientation (vector space)Molecular physicsScanning tunneling spectroscopyAtomic physicsChemical physicsChemistryNanotechnologyPhysicsMagnetic fieldMagnetizationComputational chemistryPhysical chemistryOpticsMathematicsGeometryQuantum mechanicsOrganic chemistryThermodynamicsMagnetic properties of thin filmsSurface Chemistry and CatalysisMolecular Junctions and Nanostructures