Article
Chemistry, Physical
Kieran Hymas, Alessandro Soncini
Summary: This study illustrates the utilization of macroscopic rotations to trigger and control spin dynamics in molecular nanomagnets, providing an effective method for constructing quantum gates and quantum gyroscopes. It also recovers spin dynamics in integer spin nanomagnets through specific rotation methods and proposes experimental schemes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Angelica P. Orlova, Maxwell S. Varley, Maximilian G. Bernbeck, Kyle M. Kirkpatrick, Philip C. Bunting, Milan Gembicky, Jeffrey D. Rinehart
Summary: We investigated the border between single-molecule and solid-state magnetism through a study of erbium-based magnetic compounds. We observed a significant decrease in magnetic relaxation rates due to differences in crystal packing, and discovered the role of nonzero-dimensional interactions in predominantly zero-dimensional magnetic materials. This opens up new possibilities for research on molecular magnetic materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Marwan Deb, Elena Popova, Steffen Peer Zeuschner, Michel Hehn, Niels Keller, Stephane Mangin, Gregory Malinowski, Matias Bargheer
Summary: This paper investigates the magnetic, optical, and lattice responses of a Pt/Cu/Bi1Y2Fe5O12/Gd3Ga5O12 heterostructure to femtosecond laser excitation, revealing the generation of high-frequency standing spin waves in the dielectric Bi1Y2Fe5O12 layer through phonon-induced change of magnetic anisotropy. It is found that incoherent phonons can lead to both fast and slow decreases of magnetic order through different spin-phonon interaction scenarios.
Article
Materials Science, Multidisciplinary
Saptorshi Ghosh, Manvendra Singh, Suhas Gangadharaiah
Summary: In this study, the magnetization dynamics in an XX spin chain model was investigated using a multiparticle fermionic state. Different initial magnetization profiles were found to lead to distinct evolution of magnetization dynamics.
Article
Materials Science, Multidisciplinary
Umar Javed, Jamir Marino, Vadim Oganesyan, Michael Kolodrubetz
Summary: In this study, we investigate the dynamics of the one-dimensional Ising model in the presence of a static symmetry-breaking boundary field. We observe oscillatory correlations with power-law decay and discover a phase diagram of dynamical responses, which directly relates to changes in the number of edge modes as the boundary and bulk magnetic field are varied. We propose experimental setups, such as Rydberg chains, to demonstrate the universal physics.
Article
Chemistry, Multidisciplinary
Nathanael P. Kazmierczak, Ryan G. Hadt
Summary: This study demonstrates that spin relaxation anisotropy in pulsed electron paramagnetic resonance is a powerful spectroscopic probe for molecular spin dynamics in transition metal complexes. Through analysis of the spin-orbit coupled wave functions, the researchers derived an analytical theory that accurately reproduces the experimental results. Compound-by-compound deviations from the average anisotropy provide a promising approach for observing specific ligand field and vibronic excited state coupling effects on spin relaxation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
Alessandro Lunghi
Summary: Spin-phonon coupling plays a crucial role in spin relaxation and decoherence in solid-state semiconductors. This study combines advanced electronic structure methods with time-local master equations to predict spin-phonon relaxation times in various solid-state coordination compounds, demonstrating the feasibility of an accurate and fully ab initio implementation of spin relaxation theory.
Article
Materials Science, Multidisciplinary
Michal Gawelczyk, Krzysztof Gawarecki
Summary: The theoretical study reveals that the spin-flip tunneling rate can be as high as 1% of the spin-conserving one, and the main contribution comes from the Dresselhaus spin-orbit interaction. Despite the absence of a magnetic field, the spin relaxation process remains active at a considerable rate.
Article
Chemistry, Multidisciplinary
Zhiyan Chen, Xiangqian Lu, Jiawei Qiao, Jianqiang Liu, Wei Qin
Summary: The response of crystal structure to external stimuli provides potential applications in the areas of detection, diagnosis, and repair. In this study, two allotropic organic cocrystals with different space groups and lattice parameters, but identical donor and acceptor molecules, were fabricated. Under external stimuli, pronounced differences in lattice vibration and electron-phonon coupling were observed in these two crystals, along with different strengths of spin polarizations.
Article
Materials Science, Multidisciplinary
M. Pregelj, A. Zorko, D. Arcon, M. Klanjsek, N. Jansa, P. Jeglic, O. Zaharko, S. Kraemer, M. Horvatic, A. Prokofiev
Summary: In this study, a comprehensive investigation of β-TeVO4 using nuclear magnetic resonance technique reveals the dynamic nature of spin-density-wave (SDW) and spin-stripe phases in this material. In the high-field phase, the arrangement of magnetic moments is similar to that of the SDW phase, possibly stabilized by magnetic anisotropy.
Article
Chemistry, Inorganic & Nuclear
Fabio Santanni, Andrea Albino, Matteo Atzori, Davide Ranieri, Enrico Salvadori, Mario Chiesa, Alessandro Lunghi, Andrea Bencini, Lorenzo Sorace, Federico Totti, Roberta Sessoli
Summary: This study investigates the selection of molecular spin qubits with long coherence time T-m through a combination of theoretical and experimental methods, focusing on the effects of vibrational properties and nuclear spins of hydrogens on spin dynamics. The results show that removing hydrogens can enhance the performance of spin qubits.
INORGANIC CHEMISTRY
(2021)
Article
Physics, Applied
R. B. Morgunov, R. S. Allayarov, E. I. Kunitsyna, O. V. Koplak
Summary: Ferromagnetic microparticles affect spin relaxation in Er3+ single-ion magnet in a composite material. The balance of thermal spin noise is changed in Er3+ complexes due to the influence of surrounding ferromagnetic matrix. The electron spin noise controlled by ferromagnetic media has two competing sources.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Jian-Yin Huang, Pei-Yun Li, Zong-Quan Zhou, Chuan-Feng Li, Guang-Can Guo
Summary: Er3+:Y2SiO5 is a material of interest for quantum memories and transducers, with recent research showing significant improvements in electron spin and nuclear spin coherence lifetimes at subkelvin temperatures. This enhanced coherence could be valuable for further applications in fiber-based quantum networks.
Article
Chemistry, Multidisciplinary
Magdalena Owczarek, Minseong Lee, Shuanglong Liu, Ella R. Blake, Chloe S. Taylor, Georgia A. Newman, James C. Eckert, Juan H. Leal, Troy A. Semelsberger, Hai-Ping Cheng, Wanyi Nie, Vivien S. Zapf
Summary: The article discusses the achievement of magnetoelectric coupling near room temperature in a spin crossover Fe-II molecule-based compound. The large atomic displacements resulting from Jahn-Teller distortions induce changes in the molecule dipole moment, leading to a step-wise change in the electric polarization and dielectric constant. The research results have significant implications for expanding magnetoelectric spin crossovers to ambient conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Physics, Multidisciplinary
Jinsoo Park, Jin-Jian Zhou, Yao Luo, Marco Bernardi
Summary: Developing a microscopic understanding of spin decoherence is crucial for advancing quantum technologies. In this study, the authors present a computational approach that unifies the modeling of two main sources of phonon-induced spin decoherence and enables accurate predictions of spin relaxation and precession in semiconductors. Their findings highlight the significant role of vertex correction in the electron spin dynamics in solids, providing insights for the development of spin-based quantum technologies.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Luca Muenzfeld, Milena Dahlen, Adrian Hauser, Nolwenn Mahieu, Senthil Kumar Kuppusamy, Jules Moutet, Maxime Tricoire, Ralf Koeppe, Leo La Droitte, Olivier Cador, Boris Le Guennic, Gregory Nocton, Eufemio Moreno-Pineda, Mario Ruben, Peter W. Roesky
Summary: The solvation of [(CNT)Ln(eta(8)-COT)] complexes with tetrahydrofuran (THF) can lead to neutral and ionic species in a solid-to-solid transformation. These species exhibit switchable luminophores and single-molecule magnet properties due to the distortion caused by solvation. The desolvation of the coordinated solvents can be achieved through a dynamic vacuum or temperature gradient stimulus. Raman spectroscopic investigations confirm the fast and reversible solvation and desolvation processes, and a Nd:YAG laser is found to induce a spatially resolved self-sufficient switching process for the Ce(III) analogue.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Kais Dhbaibi, Maxime Grasser, Haiet Douib, Vincent Dorcet, Olivier Cador, Nicolas Vanthuyne, Francois Riobe, Olivier Maury, Stephan Guy, Amina Bensalah-Ledoux, Bruno Baguenard, Geert L. J. A. Rikken, Cyrille Train, Boris Le Guennic, Matteo Atzori, Fabrice Pointillart, Jeanne Crassous
Summary: The combination of physical properties sensitive to molecular chirality in a single system allows the observation of interesting phenomena such as magneto-chiral dichroism (MChD) and circularly polarized luminescence (CPL), which have potential applications in optical data readout and display technology. By coordinating a chiral organic chromophore to Yb(hfac)(3) units, homochiral one-dimensional coordination polymers of Yb-III were designed, which exhibit strong magnetic anisotropy and show single-molecule magnet behavior and room temperature magneto-chiral dichroism (MChD). Computational investigations support the correlation between MChD and the structure.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Applied
Sergio Martinez-Losa del Rincon, Ignacio Gimeno, Jorge Perez-Bailon, Victor Rollano, Fernando Luis, David Zueco, Maria Jose Martinez-Perez
Summary: By optimizing the geometry of the electromagnetic cavity and the ferromagnet, coherent exchange of information between cavity photons and ferromagnetic spin excitations can be achieved at high speeds. The fundamental frequency of the magnonic resonator is also influenced by the geometry of the ferromagnet. Experimental results show that the light-matter coupling strength can be estimated using open transmission lines or resonant cavities, with good agreement between the two methods. A theoretical framework based on electromagnetic and micromagnetic simulations successfully explains the experimental results.
PHYSICAL REVIEW APPLIED
(2023)
Article
Chemistry, Multidisciplinary
Moritz Bernhardt, Maciej D. D. Korzynski, Zachariah J. J. Berkson, Fabrice Pointillart, Boris Le Guennic, Olivier Cador, Christophe Coperet
Summary: Generating or retaining slow magnetic relaxation in surface-immobilized single-molecule magnets (SMMs) from molecular precursors is a challenging task. However, a material with SMM characteristics has been successfully generated by chemisorption of (Cp-ttt)(2)DyCl on a silica surface containing tailored Lewis acidic Al-(III) sites. Detailed studies reveal slow magnetic relaxation up to 51 K, hysteresis up to 8 K, and an effective energy barrier (U (eff)) of 449 cm(-1), the highest reported for a supported SMM.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Francisco Marques-Moros, Carla Boix-Constant, Samuel Manas-Valero, Josep Canet-Ferrer, Eugenio Coronado
Summary: We conducted a comprehensive optical characterization of the van der Waals semiconductor metamagnet CrSBr using temperature- and magnetic-field-dependent photoluminescence. We observed a characteristic peak that disappeared when switching the ferromagnetic layers and exhibited a different temperature dependence from excitonic peaks. This peak's contribution to photoluminescence was enhanced around 30-40 K, coinciding with the hidden order magnetic transition temperature. Our findings reveal the connection between optical and magnetic properties through the ionization of magnetic donor vacancies and demonstrate the potential of designing 2D heterostructures with magnetic and excitonic properties.
Article
Chemistry, Multidisciplinary
Maurits J. A. Houmes, Samuel Manas-Valero, Alvaro Bermejillo-Seco, Eugenio Coronado, Peter G. Steeneken, Herre S. J. van der Zant
Summary: This article investigates the structural anisotropy of CrPS4 and its relationship with magnetic phase transitions and discovers different mechanical response behavior compared to previously studied van der Waals magnets. The results demonstrate the potential of CrPS4 in the field of low-dimensional magnetism and show the potential of mechanical resonators in studying structural modifications in 2D materials and van der Waals heterostructures.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Ramon Torres-Cavanillas, Miguel Gavara-Edo, Eugenio Coronado
Summary: The field of spin-crossover complexes is transitioning from studying the spin transition phenomenon to its application in molecular electronics. Processing spin-crossover materials as nanoparticles is a convenient way to maintain the bistability and reduce size. This paper reviews the recent advances in the chemical design of these nanoparticles and their integration into electronic devices, while also focusing on integrating them with 2D materials to improve device endurance and spin state detection.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mario Palacios-Corella, Victor Garcia-Lopez, Joao Carlos Waerenborgh, Bruno J. C. Vieira, Guillermo Minguez Espallargas, Miguel Clemente-Leon, Eugenio Coronado
Summary: A bifunctionalized polyoxometalate containing a redox active hexavanadate moiety and two tridentate 2,6-bis(pyrazol-1-yl)pyridine ligands was synthesized and characterized. Reaction with Fe(ii) or Zn(ii) ions resulted in the formation of crystalline 1D networks with tunable magnetic and redox properties. The structures exhibited spin-crossover behavior, which could be induced by light irradiation, and reversible solvent exchange. Additionally, the hexavanadate unit could be reduced and reoxidized, leading to changes in the spin state of Fe(ii) and creating a multifunctional material that can be controlled by various stimuli.
Article
Chemistry, Multidisciplinary
Enrique Burzuri, Maria Jose Martinez-Perez, Carlos Marti-Gastaldo, Marco Evangelisti, Samuel Manas-Valero, Eugenio Coronado, Jesus I. Martinez, Jose Ramon Galan-Mascaros, Fernando Luis
Summary: In this article, a novel 2D heterometallic oxalate complex is presented as a potential candidate for quantum spin liquid (QSL) material. It exhibits strong antiferromagnetic correlations and the absence of magnetic ordering, making it an appealing QSL candidate.
Article
Chemistry, Multidisciplinary
Hao Wang, Zhenhua Zhu, Leo La Droitte, Wuping Liao, Olivier Cador, Boris Le Guennic, Jinkui Tang
Summary: Two luminescent Tb(iii)-calixarene aggregates with architectures of 1D chain (1) and 3D network (2) have been synthesized, and their single-molecule toroidal (SMT) characteristics have been experimentally investigated with the support of ab initio calculations. Aggregate 2 with a 3D structure is the first covalently bonded 3D SMT polymer that has been successfully synthesized.
Article
Chemistry, Multidisciplinary
Florian Benner, Leo La Droitte, Olivier Cador, Boris Le Guennic, Selvan Demir
Summary: A judicious combination of radical ligands with paramagnetic metal ions elicits strong magnetic exchange coupling, which leads to important properties for future technologies. The metal-radical approach aids in effective magnetic communication, especially for lanthanide ions. The presented complexes of bisbenzimidazole-based dilanthanide exhibit strong antiferromagnetic coupling and single-molecule magnetism, showing potential for applications in organic radical bridge materials.
Article
Multidisciplinary Sciences
Junhyeon Jo, Yuan Peisen, Haozhe Yang, Samuel Manas-Valero, Jose J. Baldovi, Yao Lu, Eugenio Coronado, Felix Casanova, F. Sebastian Bergeret, Marco Gobbi, Luis E. Hueso
Summary: We demonstrate novel devices based on the unique properties of two-dimensional materials, including infinite magnetoresistance and nonreciprocal charge transport, using NbSe2/CrSBr van der Waals superconducting spin valves. We also show the realization of a superconductive spin valve with multiple stable resistance states by integrating different CrSBr crystals in a lateral heterostructure.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Miguel Gavara-Edo, Francisco Javier Valverde-Munoz, M. Carmen Munoz, Safaa Elidrissi Moubtassim, Francisco Marques-Moros, Javier Herrero-Martin, Kateryna Znovjyak, Maksym Seredyuk, Jose Antonio Real, Eugenio Coronado
Summary: Materials based on spin crossover molecules have attracted significant attention in molecular magnetism. This study presents a novel spin crossover material that can form thermally stable thin films while retaining its molecular bistability.
CHEMISTRY OF MATERIALS
(2023)
