2016/09/02 by Peter Jacobson, Jacobson, Peter, Matthias Muenks +12
Chemistry · Engineering · Physics and Astronomy · #Boron nitride #Chemical physics #Chemistry #Cobalt #Condensed matter physics #FOS: Physical sciences #Ferromagnetism #Hydrogen #Inorganic chemistry #Ligand (biochemistry) #Magnetic properties of thin films #Materials science #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Molecular Junctions and Nanostructures #Molecule #Nanotechnology #Physics #Quantum and electron transport phenomena #Spin (aerodynamics) #Spin states #Spintronics #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.1609.00612
published in arXiv (Cornell University) (Cornell University)
openalex publication_date 2016/09/02 · arxiv created 2016/12/15 · arxiv updated 2016/12/16 · openalex created_date 2022/10/02 · openalex updated_date 2026/08/05
Spin-bearing molecules can be stabilized on surfaces and in junctions with\ndesirable properties such as a net spin that can be adjusted by external\nstimuli. Using scanning probes, initial and final spin states can be deduced\nfrom topographic or spectroscopic data, but how the system transitioned between\nthese states is largely unknown. Here we address this question by manipulating\nthe total spin of magnetic cobalt hydride complexes on a corrugated boron\nnitride surface with a hydrogen- functionalized scanning probe tip by\nsimultaneously tracking force and conductance. When the additional hydrogen\nligand is brought close to the cobalt monohydride, switching between a corre-\nlated S = 1 /2 Kondo state, where host electrons screen the magnetic moment,\nand a S = 1 state with magnetocrystalline anisotropy is observed. We show that\nthe total spin changes when the system is transferred onto a new potential\nenergy surface defined by the position of the hydrogen in the junction. These\nresults show how and why chemically functionalized tips are an effective tool\nto manipulate adatoms and molecules, and a promising new method to selectively\ntune spin systems.\n