Polyanisotropic Magnetoelectric Coupling in an Electrically Controlled Molecular Spin Qubit
Two molecular spin qubits are studied with pulsed electron paramagnetic resonance (EPR) spectroscopy under electric fields to assess their magnetoelectric (ME) couplings and electric spin control. [Fe O(PhCOO) (py) ]ClO ·py ( ) is characterized by strong Dzyaloshinskii-Moriya interactions (DMI) whic...
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| Published in: | Journal of the American Chemical Society Vol. 141; no. 50; p. 19765 |
|---|---|
| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
United States
18.12.2019
|
| ISSN: | 1520-5126, 1520-5126 |
| Online Access: | Get more information |
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| Summary: | Two molecular spin qubits are studied with pulsed electron paramagnetic resonance (EPR) spectroscopy under electric fields to assess their magnetoelectric (ME) couplings and electric spin control. [Fe
O(PhCOO)
(py)
]ClO
·py (
) is characterized by strong Dzyaloshinskii-Moriya interactions (DMI) which induce important magnetoanisotropy, whereas the DMI in [Cr
O(PhCOO)
(py)
]ClO
·0.5py (
) is 1-2 orders of magnitude weaker.
is observed to demonstrate a clear ME effect, whose intensity shows an unprecedented dependence on the molecular orientation within the electric field
(electroanisotropy) and on the relative orientations of the molecular
axis, the Zeeman field
and
(magnetoelectric anisotropy). The electric control in
is shown to be coherent, and the ME effect exhibits complex dynamics characterized by saturation and oscillatory effects. On the other hand,
exhibits no discernible ME effect, which correlates well with its negligible DMI. |
|---|---|
| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 1520-5126 1520-5126 |
| DOI: | 10.1021/jacs.9b09101 |