Results 141 to 150 of about 401,182 (321)

Manipulating Individual Topological Solitons and Bisolitons in an Electronic System

open access: yesAdvanced Materials, EarlyView.
While localized topological modes in quantum materials promise loss‐less delivery of classical and quantum information, manipulating them individually has been challenging. This work succeeded in manipulating topological solitons formed along atomic wires on silicon surfaces with high reproducibility in various ways, including translating, transforming
Taehwan Im   +2 more
wiley   +1 more source

Zero-range effective field theory for resonant wino dark matter. Part III. Annihilation effects

open access: yesJournal of High Energy Physics, 2018
Near a critical value of the wino mass where there is a zero-energy S-wave resonance at the neutral-wino-pair threshold, low-energy winos can be described by a zero-range effective field theory (ZREFT) in which the winos interact nonperturbatively ...
Eric Braaten, Evan Johnson, Hong Zhang
doaj   +1 more source

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

Results from the search for dark matter in the Milky Way with 9 years of data of the ANTARES neutrino telescope

open access: yesPhysics Letters B, 2017
Using data recorded with the ANTARES telescope from 2007 to 2015, a new search for dark matter annihilation in the Milky Way has been performed. Three halo models and five annihilation channels, WIMP+WIMP→bb¯,W+W−,τ+τ−,μ+μ− and νν¯, with WIMP masses ...
A. Albert   +127 more
doaj   +1 more source

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

Observation of Topological Chirality Switching Induced Freezing of a Skyrmion Crystal

open access: yesAdvanced Materials, EarlyView.
Using Lorentz Transmission electron microscopy, it is shown that in the insulating van der Waals ferromagnet, CrBr3, a magnetic field can cause Bloch skyrmionic bubbles to spontaneously switch their chirality. As achiral type‐II bubbles are an intermediate state, the bubbles rapidly elongate and shrink when switching, thereby inducing a freezing of the
John Fullerton   +10 more
wiley   +1 more source

Diffusion-free photon upconversion driven by intramolecular triplet-triplet annihilation in engineered conjugated chromophores [PDF]

open access: green, 2022
Sara Mattiello   +8 more
openalex   +1 more source

Developments in Nanopatterning of Graphene; Toward Direct Writing

open access: yesAdvanced Materials, EarlyView.
Overview of principal direct‐write graphene patterning methodologies including focused electron beam induced deposition (FEBID), laser induced graphitisation (LIG), focused ion beam (FIB), scanning tunneling microscopy (STM) and atomic force microscopy (AFM) Abstract Graphene, with its exceptional electronic, mechanical, and thermal properties, remains
Szymon Abrahamczyk   +4 more
wiley   +1 more source

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