Theoretical Basis for Switching a Kramers Single Molecular Magnet by Circularly-Polarized Radiation

Theoretical Basis for Switching a Kramers Single Molecular Magnet by Circularly-Polarized Radiation Full article

Journal

Materials
ISSN: 1996-1944

Output data

Year: 2019, Volume: 12, Number: 23, Article number : 3865, Pages count : DOI: 10.3390/ma12233865

Tags

Kramers ion; circular polarization; selective transition; zero field splitting; far infrared spectroscopy; SMM; magnetization inversion

Authors

Maryasov Alexander G. ¹ , Bowman Michael K. ^2,3 , Fedin Matvey V. ^4,5 , Veber Sergey L. ^4,5

Affiliations

1	Voevodsky Institute of Chemical Kinetics and Combustion of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
2	Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, AL 35487, USA
3	Novosibirsk Institute of Organic Chemistry of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
4	International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
5	Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia

The d-group Kramers ions, having strong zero field splitting (ZFS) with axial symmetry and a negative D value for the ZFS Hamiltonian, are widely considered as candidates for use as single molecular magnets (SMMs). An important need is the means to switch the SMM between its states in a reasonably short and predictable period of time, which is generally not available. We propose an approach, Zeeman-far infrared (ZeFIR) double resonance, in which circularly polarized alternating magnetic fields in the far infrared (FIR) range induce selective magnetic dipole transitions between different Kramers doublets of the SMM and polarized microwave (mw) pulses transfer excitation inside the upper Kramers doublet. A combination of FIR and mw pulses allows unidirectional switching between +S and -S states of the ion. The proposed approach is considered for a model quartet system with total spin S = 3/2, which seems to be the most promising object for selective resonance manipulations of its states by circularly polarized radiation.

Maryasov A.G. , Bowman M.K. , Fedin M.V. , Veber S.L.
Theoretical Basis for Switching a Kramers Single Molecular Magnet by Circularly-Polarized Radiation

Materials. 2019. V.12. N23. 3865 . DOI: 10.3390/ma12233865 WOS Scopus РИНЦ

Full text from publisher

Published online:

Nov 22, 2019

Web of science	WOS:000510178700061
Scopus	2-s2.0-85075899604
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