Results 101 to 110 of about 190,995 (279)

Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α‐Quartz

open access: yesAdvanced Materials, EarlyView.
Chiral acoustic phonons in α‐quartz are probed via Brillouin light scattering, exploiting the photon's helicity and the crystal's handedness. The interaction obeys a selection rule arising from pseudoangular momentum conservation, enabling direct optical access to phonon chirality in nonsymmorphic crystals.
Changsoo Kim   +8 more
wiley   +1 more source

Momentum dependent light scattering in insulating cuprates

open access: yes, 2007
We investigate the problem of inelastic x-ray scattering in the spin$-{1/2}$ Heisenberg model on the square lattice. We first derive a momentum dependent scattering operator for the $A_{1g}$ and $B_{1g}$ polarization geometries.
Devereaux, T. P.   +2 more
core   +2 more sources

Tuning the Surface State and Zeta Potential of Aged CuO Nanoparticles by Additive‐Free Surface Treatments as Guided by XPS

open access: yesAdvanced Materials, EarlyView.
Aging of CuO nanoparticles (NP) involves a surface reconstruction induced by hydroxylation and concurrent organic‐O adsorption, which introduces O defects in the NP subsurface region. The defective surface results in a diffuse surface space region, as reflected by a low ζ‐potential of the aged NPs in ethanol solvent.
Anastasia S. Batenkova   +3 more
wiley   +1 more source

Nodal Quasiparticle Lifetimes in Cuprate Superconductors

open access: yes, 2005
A new generation of angular-resolved photoemission spectroscopy (ARPES) measurements on the cuprate superconductors offer the promise of enhanced momentum and energy resolution.
D. J. Scalapino   +5 more
core   +1 more source

Impact of Grain Size on Low‐Temperature Carrier Phase Coherence Length in Polycrystalline Halide Perovskite Films

open access: yesAdvanced Materials Interfaces, EarlyView.
Magnetoresistance measurements on a series of polycrystalline cesium tin iodide (CsSnI3) thin film devices having varying grain sizes reveal no power law dependence with clear signatures of weak anti‐localization (spin‐orbit coupling). Surprisingly, the extracted phase coherence lengths are found to be independent of grain sizes.
Aungkan Sen   +6 more
wiley   +1 more source

CISS Effect: A Magnetoresistance Through Inelastic Scattering. [PDF]

open access: yesJ Phys Chem C Nanomater Interfaces, 2021
Huisman KH, Thijssen JM.
europepmc   +1 more source

Dynamics of Metal Centers Monitored by Nuclear Inelastic Scattering

open access: yes, 2005
Nuclear inelastic scattering of synchrotron radiation has been used now since 10 years as a tool for vibrational spectroscopy. This method has turned out especially useful in case of large molecules that contain a M\"ossbauer active metal center.
A. Becke   +46 more
core   +1 more source

Atomic‐Scale Investigation of an Asymmetric Strontium Titanate Grain Boundary

open access: yesAdvanced Materials Interfaces, EarlyView.
The structure and composition of a faceted asymmetric grain boundary in strontium titanate is investigated by scanning transmission electron microscopy (STEM), atom probe tomography (APT), and density functional theory (DFT). APT and STEM reveal a strong Sr depletion at the grain boundary and possible variations in Ti concentration between facets.
Janina Malin Rybak   +8 more
wiley   +1 more source

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