Journal Article

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2024-05-17
19:33
[PUBDB-2024-01822] Journal Article
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Intertwined crystal structure, magnetic, and charge transport properties in mixed valent A-site ordered manganite $NdBaMn_2O_6$
In the present work, we report a correlation between crystal structure, magnetic, and electrical properties in an exotic magnetic compound, NdBaMn2O6 having ~92% ordering between Nd and Ba, investigated using temperature-dependent synchrotron x-ray diffraction (XRD), dc magnetization and transport measurements. Temperature-dependent XRD data reveals that the compound undergoes various complex crystallographic phase transitions from high-temperature (T > 320 K) P4/mmm phase to intermediate (320 K – 280 K) Cmmm phase to a mixed (Cmmm and P21am) phase (280 K – 220 K) and to low-temperature P21am phase (T < 220 K). [...]
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2024-05-17
19:23

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2024-05-17
09:21
[PUBDB-2024-01815] Journal Article

Resonant Inelastic X-ray Scattering Studies of Magnetic Excitations in Ru-Based Quantum Magnets
Butsuri 79(5), 230-235 () [https://doi.org/10.11316/butsuri.79.5_230]  GO
Ruthenium compounds have served as a playground for fundamental concepts in modern condensed matter physics, encompassing unconventional superconductivity, Kitaev spin liquids, and solid-state analogues of the Higgs mode in particle physics. Quantitative description of these exotic phenomena requires experimental information on the interaction strengths among the 4d electrons. [...]
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2024-05-16
14:22
[PUBDB-2024-01801] Journal Article
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Magnetic, Mechanically Interlocked Porphyrin–Carbon Nanotubes for Quantum Computation and Spintronics
Atomic-scale reproducibility and tunability endorse magnetic molecules as candidates for spin qubits and spintronics. A major challenge is to implant those molecular spins into circuit geometries that may allow one, two, or a few spins to be addressed in a controlled way [...]
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2024-05-16
13:51
OpenAccess [PUBDB-2024-01799] Journal Article
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Composition-Dependent Alloy Nanoparticle Shape Changes under Reaction Conditions: Kinetic and Thermodynamic Effects
Particle sintering and reshaping constitute the main cause for catalyst deactivation. An atomic-scale understanding of the correlation among the catalyst structure, its support, and the gas phase under realistic reaction conditions is required for its suppression [...]
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2024-05-16
12:25
[PUBDB-2024-01790] Journal Article
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Resistive Switching Systems: A Spectromicroscopy Approach
Memristive effects, i.e., changes in the conductivity of a nonlinear two-terminal device after a voltage or current pulse, are of high interest for applications in novel information technology. A crucial step in controlling memristive effects, particularly in oxide-based systems, involves the understanding of chemical and redox-induced changes in the material during resistive switching processes. [...]
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2024-05-16
12:18
[PUBDB-2024-01789] Journal Article
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Role of Postdeposition Annealing and Doping with Si and Al Impurities in the Formation of $Hf_xSi_{1– x}O_2$ at the $SiO_2/FE:HfO_2$ Interface in a Ferroelectric Field-Effect Transistor
Characterization of the composition and extension of the SiO2/HfO2 interface in the model systems Si-sub./SiO2 (7.5 nm)/FE:HfO2 (9.5 nm)/TiN (9 nm) for standard impurity concentrations and annealing temperatures (Si 3.6%, 1000 °C; Al 5.5%, 850 °C) were carried out using X-ray photoelectron spectroscopy with high kinetic energies. In addition, the crystalline properties of HfO2 were characterized by transmission electron microscopy and grazing incidence X-ray diffraction depending on the type of impurity. [...]
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2024-05-16
12:15
[PUBDB-2024-01788] Journal Article
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Experimental benchmark data for Monte Carlo simulated radiation effects of gold nanoparticles. Part II: comparison of measured and simulated electron spectra from gold nanofoils
Physica scripta 98(5), 055016 - () [10.1088/1402-4896/accb12]  GO
Electron emission spectra of a thin gold foil after photon interaction were measured over the energy range between 50 eV and 9500 eV to provide reference data for Monte Carlo radiation-transport simulations. Experiments were performed with the HAXPES spectrometer at the PETRA III high-brilliance beamline P22 at DESY (Hamburg, Germany) for photon energies just below and above each of the gold L-edges, that is, at 11.9 keV, 12.0 keV, 13.7 keV, 13.8 keV, 14.3 keV, and 14.4 keV. [...]
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2024-05-16
12:02
[PUBDB-2024-01786] Journal Article
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Control of the asymmetric band structure in $Mn_2Au$ by a ferromagnetic driver layer
Hard x-ray angle-resolved photoemission spectroscopy reveals the momentum-resolved band structure in an epitaxial Mn2Au(001) film capped by a 2-nm-thick ferromagnetic permalloy layer. By magnetizing the permalloy capping layer, the exceptionally strong exchange bias aligns the Néel vector in the Mn2Au(001) film accordingly. [...]
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2024-05-16
11:53
DBCoverage [PUBDB-2024-01784] Journal Article
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Quantum fluctuations lead to glassy electron dynamics in the good metal regime of electron doped $KTaO_3$
One of the central challenges in condensed matter physics is to comprehendsystems that have strong disorder and strong interactions. In the stronglylocalized regime, their subtle competition leads to glassy electron dynamicswhich ceases to exist well before the insulator-to-metal transition is approa-ched as a function of doping. [...]
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