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http://dx.doi.org/10.1002/anie.200703771 | DOI Listing |
J Magn Reson
August 2024
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, 420029 Kazan, Russia. Electronic address:
The anisotropic Zeeman and strong hyperfine interactions of a Kramers ion can significantly affect its magnetic properties as well as the interactions with the nearby nuclei. The interactions with the local environment are described in the preceding article. In the current work, the change of the spin states of distant nuclei is studied.
View Article and Find Full Text PDFJ Magn Reson
August 2024
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, 420029, Kazan, Russia. Electronic address:
The electron spin echo envelope modulation (ESEEM) technique is a direct method to probe the nuclear spin coherences induced by electron spin transitions. Recently, this approach was used to study an isotopically pure YSiO crystal doped with Yb ions, and the presence of the Fermi contact interaction was proposed to explain the frequency comb detected in the two-pulse ESEEM experiment [Solovarov N. K.
View Article and Find Full Text PDFInorg Chem Front
December 2023
Dipartimento di Scienze Chimiche e Geologiche e UdR INSTM, Università degli Studi di Modena e Reggio Emilia via G. Campi 103 41125 Modena Italy
We herein investigate the heterobimetallic lantern complexes [PtVO(SOCR)] as charge neutral electronic qubits based on vanadyl complexes ( = 1/2) with nuclear spin-free donor atoms. The derivatives with R = Me (1) and Ph (2) give highly resolved X-band EPR spectra in frozen CHCl/toluene solution, which evidence the usual hyperfine coupling with the V nucleus ( = 7/2) and an additional superhyperfine interaction with the = 1/2 nucleus of the Pt isotope (natural abundance 34%). DFT calculations ascribe the spin density delocalization on the Pt ion to a combination of π and pathways, with the former representing the predominant channel.
View Article and Find Full Text PDFChem Commun (Camb)
July 2023
Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR6226, 35000 Rennes, France.
Lanthanide Single-Molecule Magnets (SMMs) fascinate the scientific community due to their plethora of potential applications ranging from data storage to spintronic devices and quantum computing. This review article proposes a comprehensive description of the influence of the nuclear spin, hyperfine interaction, on the magnetic properties of lanthanide SMMs and on quantum information processing of qudit. This influence is analysed for non-Kramers and Kramers lanthanide SMMs as well as for the electronic distribution of the electron in 4f orbitals oblate and prolate ions.
View Article and Find Full Text PDFJ Magn Reson
March 2023
Rutherford Appleton Laboratory, Chilton OX11 0QX, United Kingdom.
In samples used for dynamic nuclear polarization (DNP), spin-lattice relaxation times are usefully increased by going to high magnetic field and low temperature, typically several tesla and below 1 K. But the relaxation times for dipolar components of the nuclear spin energy remain stubbornly shorter than those for the Zeeman energy: dipolar order decays faster than the polarization itself by a huge factor-up to four orders of magnitude or more in the materials studied thus far. Such fast nuclear dipolar relaxation poses experimental challenges, for instance, when transferring polarization between different nuclear spin species via intermediate nuclear order: a proven technique to polarize rare nuclear spins.
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