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Diamagnetic Carrier-Doping-Induced Continuous Electronic and Magnetic Crossover in One-Dimensional Coordination Polymers.
J Am Chem Soc
December 2024
Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
The potential to introduce tunable electrical conductivity and molecular magnetism through carrier doping in metal-organic coordination polymers is particularly promising for nanoelectronics applications. Precise control of the doping level is essential for determining the electronic and magnetic properties. In this study, we present a series of one-dimensional coordination polymers, {(HNEt)[CuCo(L)]} (HNEt = triethylammonium, L = 1,2,4,5-tetrakis(methanesulfonamido)benzene), doped with diamagnetic Cu carriers.
View Article and Find Full Text PDFSimultaneous Development of Antiferromagnetism and Local Symmetry Breaking in a Kagome Magnet (CoFe)Sn.
J Am Chem Soc
December 2024
Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
CoSn and FeSn, two kagome-lattice metals, have recently attracted significant attention as hosts of electronic flat bands and emergent physical properties. However, current understandings of their physical properties are limited to knowledge of the average crystal structure. Here, we report the Fe-doping induced coemergence of the antiferromagentic (AFM) order and local symmetry breaking in (CoFe)Sn.
View Article and Find Full Text PDFElectronic and magnetic properties of the HfO monolayer engineered by doping with transition metals and nonmetal atoms towards spintronic applications.
Nanoscale Adv
December 2024
Institute of Theoretical and Applied Research, Duy Tan University Ha Noi 100000 Vietnam
Article Synopsis
- Doping two-dimensional (2D) materials, like the HfO monolayer, with transition metals (Mn and Fe) and nonmetals (B and C) alters their electronic and magnetic properties, making them useful for spintronic applications.
- The pristine HfO monolayer is nonmagnetic with a large band gap, but doping introduces magnetism; Mn and Fe doping leads to total magnetic moments of 3.00 and 4.00, whereas B and C impact the system's electronic characteristics.
- Pairing transition metals with nonmetal elements results in a magnetic semiconductor nature; however, these paired systems have smaller magnetic moments compared to single dopants, signifying a complex relationship between doping
Higher-Magnesium-Doping Effects on the Singlet Ground State of the Shastry-Sutherland SrCu(BO).
Inorg Chem
October 2024
Jožef Stefan Institute, Jamova cesta 39, Ljubljana 1000, Slovenia.
Doping of quantum antiferromagnets is an established approach to investigate the robustness of their ground state against the competing phases. Predictions of doping effects on the ground state of the Shastry-Sutherland dimer model are here verified experimentally on Mg-doped SrCu(BO). A partial incorporation of Mg on the Cu site in the SrCu(BO) structure leads to a subtle but systematic lattice expansion with the increasing Mg-doping concentration, which is accompanied by a slight decrease in the spin gap, the Curie-Weiss temperature, and the peak temperature of the susceptibility.
View Article and Find Full Text PDFDoping-control of excitons and magnetism in few-layer CrSBr.
Nat Commun
June 2024
Fakultät für Physik, Munich Quantum Center, and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Geschwister-Scholl-Platz 1, 80539, München, Germany.
Magnetism in two-dimensional materials reveals phenomena distinct from bulk magnetic crystals, with sensitivity to charge doping and electric fields in monolayer and bilayer van der Waals magnet CrI. Within the class of layered magnets, semiconducting CrSBr stands out by featuring stability under ambient conditions, correlating excitons with magnetic order and thus providing strong magnon-exciton coupling, and exhibiting peculiar magneto-optics of exciton-polaritons. Here, we demonstrate that both exciton and magnetic transitions in bilayer and trilayer CrSBr are sensitive to voltage-controlled field-effect charging, exhibiting bound exciton-charge complexes and doping-induced metamagnetic transitions.
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