A5049768727- Advanced Condensed Matter Physics
- Multiferroics and related materials
- Magnetic and transport properties of perovskites and related materials
- Atomic and Subatomic Physics Research
- Magnetism in coordination complexes
- X-ray Diffraction in Crystallography
- Lanthanide and Transition Metal Complexes
- Scientific Research and Discoveries
- Atomic and Molecular Physics
- Advanced NMR Techniques and Applications
- Inorganic Chemistry and Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Quantum, superfluid, helium dynamics
- Inorganic Fluorides and Related Compounds
- Solar and Space Plasma Dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Nuclear materials and radiation effects
- Geomagnetism and Paleomagnetism Studies
- Physics of Superconductivity and Magnetism
- Crystallization and Solubility Studies
Leibniz Institute for Solid State and Materials Research
2022
Technische Universität Dresden
2018-2020
Heidelberg University
2013
Max Planck Institute for Nuclear Physics
2013
Abstract The realization of ferromagnetism in semiconductors is an attractive avenue for the development spintronic applications. Here, we report a semiconducting layered metal-organic framework (MOF), namely K 3 Fe 2 [( 2,3,9,10,16,17,23,24 -octahydroxy phthalocyaninato)Fe] (K [PcFe-O 8 ]) with spontaneous magnetization. This MOF features in-plane full π-d conjugation and exhibits behavior room temperature carrier mobility 15 ± cm V −1 s as determined by time-resolved Terahertz...
The spin magnetic moment of a single proton in cryogenic Penning trap was coupled to the particle's axial motion with superimposed bottle. Jumps oscillation frequency indicate flips and were identified using Bayesian analysis.
Spin flips of a single proton were driven in Penning trap with homogeneous magnetic field. For the spin-state analysis was transported into second superimposed bottle, and continuous Stern-Gerlach effect applied. This first demonstration double technique suggests that antiproton moment measurement can potentially be improved by three orders magnitude or more.
Magnetic frustration and disorder are key ingredients to prevent the onset of magnetic order. In disordered hexagonal double perovskite ${\mathrm{BaTi}}_{1/2}{\mathrm{Mn}}_{1/2}{\mathrm{O}}_{3}$, ${\mathrm{Mn}}^{4+}$ cations, with $S=3/2$ spins, can either form highly correlated states trimers or dimers remain as weakly interacting orphan spins. At low temperature ($T$), dimer response is negligible, magnetism dominated by orphans. To explore role frustration, possibly quantum fluctuations,...
We report on isothermal magnetization, M\"ossbauer spectroscopy, and magnetostriction as well temperature-dependent alternating-current (ac) susceptibility, specific heat, thermal expansion of single crystalline polycrystalline ${\mathrm{Li}}_{2}({\mathrm{Li}}_{1\ensuremath{-}x}{\mathrm{Fe}}_{x})\text{N}$ with $x=0$ $x\ensuremath{\approx}0.30$. Magnetic hysteresis emerges at temperatures below $T\ensuremath{\approx}50\phantom{\rule{4pt}{0ex}}\mathrm{K}$ coercivity fields up to...
We present a systematic ${}^{57}\mathrm{Fe}$ M\"ossbauer study on highly diluted Fe centers in ${\mathrm{Li}}_{2}({\mathrm{Li}}_{1\ensuremath{-}x}{\mathrm{Fe}}_{x})\mathrm{N}$ single crystals as function of temperature and magnetic field applied transverse longitudinal with respect to the single-ion anisotropy axis. Below 30 K, exhibit giant hyperfine ${\overline{B}}_{A}=70.25(2)\phantom{\rule{4pt}{0ex}}\mathrm{T}$ parallel axis strongest electric gradient...
We report high-frequency/high-field electron spin resonance (ESR) and high-field magnetization studies on single crystals of the bond-disordered pyrochlore NaCaCo$_2$F$_7$. Frequency- temperature-dependent ESR investigations above freezing temperature $T_f \sim 2.4$ K reveal coexistence two distinct magnetic phases. A cooperative paramagnetic phase, evidenced by a gapless excitation mode, is found as well spin-glass phase developing below 20 which associated with gapped low-energy...
FeMn3Ge2Sn7O16 is a fully ordered stoichiometric phase containing an undistorted hexagonal kagomé lattice of Mn2+ cations. It represents not only important expansion the chemistry complex composite FeFe3Si2Sn7O16 structure type, by replacing silicon with germanium, but also improvement on perfection anisotropic high-spin Fe2+ (d6, L = 2) isotropic (d5, 0), controlled size-matched replacement SiO44– GeO44– bridging units. This anisotropy was suspected playing role in unique "striped" magnetic...