Article
Chemistry, Multidisciplinary
Liang Zhao, Yin-Shan Meng, Qiang Liu, Osamu Sato, Quan Shi, Hiroki Oshio, Tao Liu
Summary: The study reports a magnetic bistable material consisting of specific compounds that can undergo multiple magnetic states transitions induced by light, showing behaviors of single-chain magnets and single-molecule magnets.
Review
Chemistry, Multidisciplinary
Kuppusamy Senthil Kumar, Mario Ruben
Summary: This review covers the advances in vacuum-sublimable SCO complexes, including the design and synthesis of functional SCO complexes, on-surface SCO of thin films, and various device architectures based on sublimable SCO complexes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Jiajia Li, Xiao-Peng Sun, Shiqi Bi, Minglu Xu, Siyu Jia, Zheng Tang, Pengtao Ma, Jingping Wang, Jun Tao, Jingyang Niu
Summary: This study successfully integrated polyoxometalate (POM) anions into the Fe(II) spin crossover (SCO) system and found that POM anions play an effective role in regulating spin-state switching properties.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Philipp Stegmann, Alex Gee, Neil T. Kemp, Juergen Koenig
Summary: The study reveals that the two spin-crossover molecules are coupled in a nanojunction device and their interaction is described through statistical analysis and parameter extraction. The time dependence of factorial cumulants is used to analyze the impact of interactions between the two spin-crossover molecules on the switching dynamics.
Article
Materials Science, Multidisciplinary
T. Watanabe, R. Okada, K. Tomiyasu
Summary: Ultrasound velocity measurements reveal two types of symmetry-resolved elastic anomaly in the pseudocubic spin-crossover cobaltite LaCoO3 and the lightly Ni-substituted La(Co0.99Ni0.01)O-3. The temperature dependence of the bulk modulus indicates isostructural lattice instability arising from orbital fluctuations, while the temperature dependence of the shear moduli exhibits elasticity crossover arising from spin crossover. The study also shows that the isostructural lattice instability in LaCoO3 is suppressed with Ni substitution, suggesting the suppression of orbital fluctuations.
Article
Physics, Applied
Yun-Lei Sun, Hang Xie, Guo-Hong Chen, Si-Chao Du, Zhong-Bao Chen, Hao Xie, En-Jia Ye
Summary: Researchers have discovered that photon-induced topological states in kagome-lattice nanoribbons can generate both valley and spin-polarized edge states, without the need for a magnetic substrate or Rashba spin-orbit coupling. They propose a 0-photon-extraction scheme to obtain the effective Hamiltonian under low-frequency light for the first time, and analyze the topological properties and phase transition of the irradiated kagome system, similar to the high-frequency case. They design an all-optically controlled valley-resolved spin filter based on this, which can be switched by left- or right-circularly-polarized light. In the future, these optically controlled models could be extended to the design of magnetism-free spin-valley filters or switchers.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Qianqian Yang, Yin-Shan Meng, Tao Liu, Jinkui Tang
Summary: The study of two iron(o) complexes reveals that the spin states and spin-crossover behavior are influenced by supramolecular interactions and crystal packing effects. Complex 1·ClO4 shows light-induced excited spin state trapping and two-step spin-crossover at room temperature, while complex 1·BF4 exhibits gradual spin-crossover behavior. Magnetostructural analysis provides insight into the differences in the spin-crossover properties of the two complexes.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Sven Johannsen, Sascha Schueddekopf, Sascha Ossinger, Jan Grunwald, Felix Tuczek, Manuel Gruber, Richard Berndt
Summary: Investigations were conducted on isolated tetramers of the spin crossover compound Fe(H2B-(pyrazole)(pyridylpyrazole))2on Ag(111) at cryogenic temperature using a scanning tunneling microscope (STM) in ultrahigh vacuum. Besides the spin states resulting from electron-induced spin crossover, a third state with distinct current-voltage characteristics and intramolecular image contrast was discovered. This state remains stable within a certain voltage range but decays into the low- and high-spin states of the Fe complex beyond that range. The researchers propose that this state corresponds to a negatively charged Fe complex in its high-spin state, which shares the same number of electrons with the analogous Co compound.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Physics, Applied
M. Kurkin, N. B. Orlova, P. A. Agzamova
Summary: We propose a mechanism for optical magnetization reversal of metallic ferrimagnets near the magnetic compensation temperature using femtosecond linearly polarized optical pumping. This mechanism is based on the spin sublattice model proposed by M. I. Kurkin and N. B. Orlova in 2019, and has been experimentally observed in the GdFeCo alloy.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Chemistry, Multidisciplinary
Senthil Kumar Karuppannan, Alejandro Martin-Rodriguez, Eliseo Ruiz, Phimphaka Harding, David J. Harding, Xiaojiang Yu, Anton Tadich, Bruce Cowie, Dongchen Qi, Christian A. Nijhuis
Summary: This study reports the first room temperature switchable Fe(iii) molecular spin crossover tunnel junction, constructed from self-assembled molecules on graphene surfaces with conductance switching associated with the high and low spin states. Analysis reveals coherent tunnelling dominates charge transport across the molecule, and the SCO complex retains its functionality on the surface, indicating van der Waals molecule-electrode interfaces provide good junction stability while retaining SCO switching capability.
Article
Chemistry, Physical
Lijun Zhang, Karl Ridier, Oleksandr Ye. Horniichuk, Steïphane Calvez, Lionel Salmon, Gaïbor Molnar, Azzedine Bousseksou
Summary: The formation of hybrid light-matter states, which allows control of quantum-mechanical states and manipulation of molecular materials, has been observed in switchable strong light-matter coupling involving bistable spin-crossover molecules. The thermally induced switching between low-spin and high-spin states of these molecules enables fine control of the light-matter hybridization strength, offering the possibility of reversible switching between ultrastrong- and weak-coupling regimes within a single photonic structure. This work demonstrates the potential of spin-crossover molecular compounds in the development of tunable polaritonic devices and polaritonic chemistry.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
William Baker, Michel van Veenendaal
Summary: The theory discusses the ultrafast low-to-high spin transition in divalent iron, focusing on the decay process of MLCT states and the influence of spin-orbit interaction on transitions.
Article
Chemistry, Multidisciplinary
Mason L. L. Valentine, Guoxin Yin, Julius J. J. Oppenheim, Mircea Dinca, Wei Xiong
Summary: We investigated the water H-bond network and its dynamics in Ni2Cl2BTDD using linear and ultrafast IR spectroscopy. We found that water forms an extensive H-bonding network in Ni2Cl2BTDD, which can rearrange within a confined cone up to 50 degrees within 1.3 ps. This reorientation indicates H-bond rearrangement, similar to bulk water. The picosecond H-bond rearrangement in Ni2Cl2BTDD supports its reversibility in water sorption.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Physics, Applied
Jiahua Cai, Mingcong Dai, Sai Chen, Peng Chen, Jiaqi Wang, Hongting Xiong, Zejun Ren, Shaojie Liu, Zhongkai Liu, Caihua Wan, Ming Bai, Xiaojun Wu
Summary: In this study, efficient injection and accurate detection of femtosecond THz spin currents with nanoscale lateral spatial resolution were achieved using spintronic THz emission nanoscopy (STEN). The integration of nanophotonics, nanospintronics, and THz-nanotechnology into a unified platform enables the characterization of spin states at micro-to-nanoscale densities and accelerates the development of high-frequency spintronic optoelectronic nanodevices, as well as catalyzing other revolutionary technical applications.
APPLIED PHYSICS REVIEWS
(2023)
Article
Engineering, Electrical & Electronic
Yuyan Wang, Takuya Taniguchi, Po-Hung Lin, Daniel Zicchino, Andreas Nickl, Jan Sahliger, Chih-Huang Lai, Cheng Song, Huaqiang Wu, Qionghai Dai, Christian H. Back
Summary: This study investigates the time-resolved detection of spin-orbit torque switching of the magnetization and exchange bias in platinum/cobalt/iridium-manganese heterostructures. The results show that sub-nanosecond current pulses can partially switch the ferromagnets, interfacial antiferromagnetic spins, and exchange bias, allowing for flexible control of the switching probabilities at multiple levels. The findings also demonstrate that spin-orbit-torque-induced switching of the exchange bias can stabilize multilevelled magnetization switching within sub-nanosecond current pulses.
NATURE ELECTRONICS
(2022)
Article
Chemistry, Physical
Scott M. Dyar, Amanda L. Smeigh, Steven D. Karlen, Ryan M. Young, Michael R. Wasielewski
CHEMICAL PHYSICS LETTERS
(2015)
Article
Chemistry, Physical
S. E. Canton, X. Zhang, Y. Liu, J. Zhang, M. Papai, A. Corani, A. L. Smeigh, G. Smolentsev, K. Attenkofer, G. Jennings, C. A. Kurtz, F. Li, T. Harlang, D. Vithanage, P. Chabera, A. Bordage, L. Sun, S. Ott, K. Warnmark, V. Sundstrom
FARADAY DISCUSSIONS
(2015)
Article
Chemistry, Physical
S. E. Canton, X. Zhang, Y. Liu, J. Zhang, M. Papai, A. Corani, A. L. Smeigh, G. Smolentsev, K. Attenkofer, G. Jennings, C. A. Kurtz, F. Li, T. Harlang, D. Vithanage, P. Chabera, A. Bordage, L. Sun, S. Ott, K. Warnmark, V. Sundstrom
FARADAY DISCUSSIONS
(2015)
Editorial Material
Chemistry, Multidisciplinary
Stafford W. Sheehan, Etosha R. Cave, Kendra P. Kuhl, Nicholas Flanders, Amanda L. Smeigh, Dick T. Co
Article
Chemistry, Multidisciplinary
Amanda L. Smeigh, Loic Le Pleux, Jerome Fortage, Yann Pellegrin, Errol Blart, Fabrice Odobel, Leif Hammarstrom
CHEMICAL COMMUNICATIONS
(2012)
Review
Chemistry, Inorganic & Nuclear
Fabrice Odobel, Yann Pellegrin, Elizabeth A. Gibson, Anders Hagfeldt, Amanda L. Smeigh, Leif Hammarstrom
COORDINATION CHEMISTRY REVIEWS
(2012)
Article
Chemistry, Physical
Michael T. Colvin, Raanan Carmieli, Tomoaki Miura, Sabine Richert, Daniel M. Gardner, Amanda L. Smeigh, Scott M. Dyar, Sarah M. Conron, Mark A. Ratner, Michael R. Wasielewski
JOURNAL OF PHYSICAL CHEMISTRY A
(2013)
Article
Chemistry, Physical
Sarah M. Mickley Conron, Leah E. Shoer, Amanda L. Smeigh, Annie Butler Ricks, Michael R. Wasielewski
JOURNAL OF PHYSICAL CHEMISTRY B
(2013)
Article
Chemistry, Physical
Sophie E. Canton, Xiaoyi Zhang, Latevi M. Lawson Daku, Amanda L. Smeigh, Jianxin Zhang, Yizhu Liu, Carl-Johan Wallentin, Klaus Attenkofer, Guy Jennings, Charles A. Kurtz, David Gosztola, Kenneth Warnmark, Andreas Hauser, Villy Sundstrom
JOURNAL OF PHYSICAL CHEMISTRY C
(2014)
Article
Chemistry, Multidisciplinary
Benoit Chavillon, Laurent Cario, Adele Renaud, Franck Tessier, Francois Chevire, Mohammed Boujtita, Yann Pellegrin, Errol Blart, Amanda Smeigh, Leif Hammarstrom, Fabrice Odobel, Stephane Jobic
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Article
Chemistry, Multidisciplinary
Charusheela Ramanan, Amanda L. Smeigh, John E. Anthony, Tobin J. Marks, Michael R. Wasielewski
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Article
Chemistry, Multidisciplinary
Raanan Carmieli, Amanda L. Smeigh, Sarah M. Mickley Conron, Arun K. Thazhathveetil, Masaaki Fuki, Yasuhiro Kobori, Frederick D. Lewis, Michael R. Wasielewski
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Article
Chemistry, Multidisciplinary
Victoria L. Gunderson, Amanda L. Smeigh, Chul Hoon Kim, Dick T. Co, Michael R. Wasielewski
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Article
Chemistry, Multidisciplinary
Yurina Shim, Benjamin D. Yuhas, Scott M. Dyar, Amanda L. Smeigh, Alexios P. Douvalis, Michael R. Wasielewski, Mercouri G. Kanatzidis
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2013)
Article
Chemistry, Multidisciplinary
Nadia Petlakh Co, Ryan M. Young, Amanda L. Smeigh, Michael R. Wasielewski, Brian M. Hoffman
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2014)