Resolving ambiguity of the Kondo temperature determination in mechanically tunable single-molecule Kondo systems

0549100 - FZÚ 2022 RIV US eng J - Journal Article
Žonda, M. - Stetsovych, Oleksandr - Korytár, R. - Ternes, M. - Temirov, R. - Raccanelli, A. - Tautz, F.S. - Jelínek, Pavel - Novotný, T. - Švec, Martin
Resolving ambiguity of the Kondo temperature determination in mechanically tunable single-molecule Kondo systems.
Journal of Physical Chemistry Letters. Roč. 12, č. 27 (2021), s. 6320-6325. ISSN 1948-7185
R&D Projects: GA ČR GJ17-24210Y; GA ČR(CZ) GX20-13692X; GA MŠMT LM2018110
Grant - others:AV ČR(CZ) AP1601
Program: Akademická prémie - Praemium Academiae
Institutional support: RVO:68378271
Keywords : SPM * Kondo * magnetic properties * NRG
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 6.888, year: 2021
Method of publishing: Limited access
https://doi.org/10.1021/acs.jpclett.1c01544

We show how this ambiguity can be resolved if additional control parameters are present, such as magnetic field and mechanical gating. We record the evolution of the differential conductance by lifting an individual molecule from the metal surface with the tip of a scanning tunneling microscope. By fitting the measured conductance spectra with the single impurity Anderson model we are able to demonstrate that the lifting tunes the junction continuously from the strongly correlated Kondo-singlet to the free spin-1/2 ground state.
Permanent Link: http://hdl.handle.net/11104/0325120