TY - JOUR

T1 - Theoretical basis for switching a kramers single molecular magnet by circularly-polarized radiation

AU - Maryasov, Alexander G.

AU - Bowman, Michael K.

AU - Fedin, Matvey V.

AU - Veber, Sergey L.

N1 - Publisher Copyright: © 2019 by the authors. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - 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.

AB - 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.

KW - Circular polarization

KW - Far infrared spectroscopy

KW - Kramers ion

KW - Magnetization inversion

KW - Selective transition

KW - SMM

KW - Zero field splitting

KW - SPIN

KW - circular polarization

KW - MAGNETIZATION

KW - selective transition

KW - zero field splitting

KW - magnetization inversion

KW - ION MAGNET

KW - RESONANCE

KW - far infrared spectroscopy

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85075899604&origin=resultslist&sort=plf-f&src=s&st1=Theoretical+basis+for+switching+a+kramers+single+molecular+magnet+by+circularly-polarized+radiation&st2=&sid=86dfac33fdde4ce2e4a8a07fa9b41096&sot=b&sdt=b&sl=114&s=TITLE-ABS-KEY%28Theoretical+basis+for+switching+a+kramers+single+molecular+magnet+by+circularly-polarized+radiation%29&relpos=0&citeCnt=0&searchTerm=

U2 - 10.3390/ma12233865

DO - 10.3390/ma12233865

M3 - Article

C2 - 31771118

AN - SCOPUS:85075899604

VL - 12

JO - Materials

JF - Materials

SN - 1996-1944

IS - 23

M1 - 3865

ER -