Results 11 to 20 of about 93,269 (263)

Spin Dynamics of Flavoproteins. [PDF]

Int J Mol Sci, 2023
This short review reports the surprising phenomenon of nuclear hyperpolarization occurring in chemical reactions, which is called CIDNP (chemically induced dynamic nuclear polarization) or photo-CIDNP if the chemical reaction is light-driven. The phenomenon occurs in both liquid and solid-state, and electron transfer systems, often carrying flavins as ...
Matysik J, Gerhards L, Theiss T, Timmermann L, Kurle-Tucholski P, Musabirova G, Qin R, Ortmann F, Solov'yov IA, Gulder T.   +9 more
europepmc   +3 more sources

Terahertz Spin Current Dynamics in Antiferromagnetic Hematite

Advanced Science, 2023
An important vision of modern magnetic research is to use antiferromagnets (AFMs) as controllable and active ultrafast components in spintronic devices.
Hongsong Qiu, Tom S. Seifert, Lin Huang, Yongjian Zhou, Zdeněk Kašpar, Caihong Zhang, Jingbo Wu, Kebin Fan, Qi Zhang, Di Wu, Tobias Kampfrath, Cheng Song, Biaobing Jin, Jian Chen, Peiheng Wu   +14 more
doaj   +2 more sources

Derivatives of spin dynamics simulations [PDF]

Journal of Chemical Physics, 2009
We report analytical equations for the derivatives of spin dynamics simulations with respect to pulse sequence and spin system parameters. The methods described are significantly faster, more accurate, and more reliable than the finite difference approximations typically employed.
Christopher T Rodgers, Kuprov Ilya
exaly   +5 more sources

Ultra-high rate of temperature increment from superparamagnetic nanoparticles for highly efficient hyperthermia

Scientific Reports, 2021
The magneto-thermal effect, which represents the conversion of magnetostatic energy to heat from magnetic materials, has been spotlighted for potential therapeutic usage in hyperthermia treatments.
Jae-Hyeok Lee, Bosung Kim, Yongsub Kim, Sang-Koog Kim   +3 more
doaj   +1 more source

Generation of spin-polarized hot electrons at topological insulators surfaces by scattering from collective charge excitations

Communications Physics, 2021
A key feature of topological insulators, such as Bi2Se3 is their protected electronic surface states where the direction of spin is locked to their momentum.
Khalil Zakeri, Janek Wettstein, Christoph Sürgers   +2 more
doaj   +1 more source

Highly efficient heat-dissipation power driven by ferromagnetic resonance in MFe2O4 (M = Fe, Mn, Ni) ferrite nanoparticles

Scientific Reports, 2022
We experimentally demonstrated that heat-dissipation power driven by ferromagnetic resonance (FMR) in superparamagnetic nanoparticles of ferrimagnetic MFe2O4 (M = Fe, Mn, Ni) gives rise to highly localized incrementation of targeted temperatures.
Jae-Hyeok Lee, Yongsub Kim, Sang-Koog Kim   +2 more
doaj   +1 more source

Spin Anisotropy and Slow Dynamics in Spin Glasses [PDF]

Physical Review Letters, 2004
We report on an extensive study of the influence of spin anisotropy on spin glass aging dynamics. New temperature cycle experiments allow us to compare quantitatively the memory effect in four Heisenberg spin glasses with various degrees of random anisotropy and one Ising spin glass.
Bert, Fabrice, Dupuis, Vincent, Vincent, Eric, Hammann, Jacques, Bouchaud, J.-P.   +4 more
openaire   +4 more sources

Recursive evolution of spin-wave multiplets in magnonic crystals of antidot-lattice fractals

Scientific Reports, 2021
We explored spin-wave multiplets excited in a different type of magnonic crystal composed of ferromagnetic antidot-lattice fractals, by means of micromagnetic simulations with a periodic boundary condition.
Gyuyoung Park, Jaehak Yang, Sang-Koog Kim   +2 more
doaj   +1 more source

Unconventional magnonic surface and interface states in layered ferromagnets

Communications Physics, 2021
Magnons are the quantized spin waves, which describe the collective magnetic excitations and the long-range magnetic order in a solid. Here, the authors describe how to engineer magnonic band structures at the interface and surface of ferromagnetic ...
Khalil Zakeri, Huajun Qin, Arthur Ernst
doaj   +1 more source

Optimizing machine learning models for granular NdFeB magnets by very fast simulated annealing

Scientific Reports, 2021
The macroscopic properties of permanent magnets and the resultant performance required for real implementations are determined by the magnets’ microscopic features. However, earlier micromagnetic simulations and experimental studies required relatively a
Hyeon-Kyu Park, Jae-Hyeok Lee, Jehyun Lee, Sang-Koog Kim   +3 more
doaj   +1 more source