Results 111 to 120 of about 266,857 (311)

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

A Preliminary Study of the Gold Content of Byzantine Coins and a Possible Link to the Supernova of Year AD 1054

open access: yesHeritage
A series of 11 Byzantine gold coins were investigated, including two examples of an extremely rare type called histamenon “stellatus”, from around the reign of the Byzantine emperor Constantine IX Monomachos (AD 1042–1055). The methods applied were X-ray
Kasper Mayntz Paasch
doaj   +1 more source

Timaios of Locri. On the nature of the world and the soul [PDF]

open access: yesSCHOLE, 2013
In the seventieth of the last century interest to the pseudo-Pythagorean literature was relatively widespread among philologists. It was fuelled by the fact that these texts, written in the Hellenistic period and falsely ascribed to the Ancient ...
Anna Afonasina
doaj  

Observation of ν = 5/2 Fractional Quantum Hall Effect in Trilayer Graphene Proximitized by V‐Doped WSe2

open access: yesAdvanced Materials, EarlyView.
Even‐denominator 5/2 fractional state in trilayer graphene/V‐doped WSe2 heterostructure, mediated by proximitized magnetism, is demonstrated. An exceptionally high energy gap ∆5/2 (48 K) for the 5/2 state, significantly surpassing previous values in semiconductors and bilayer graphene (∆5/2 < 1 K) is reported.
Pramod Ghising   +7 more
wiley   +1 more source

Gravitational wave astronomy of single sources with a pulsar timing array [PDF]

open access: bronze, 2011
Kejia Lee   +7 more
openalex   +1 more source

Inverse Spillover and Dimensionality Effects on Interstitial Hydrogen

open access: yesAdvanced Materials Interfaces, EarlyView.
Interstitial hydrogen behaves distinctly at interfaces compared to the bulk. Vanadium films show proximity‐dependent hydrogen depletion near interfaces–an inverse of hydrogen spillover. Ion beam and resistivity measurements reveal Fe/V‐superlattices have lower hydrogen solubility and higher critical temperature than Cr/V due to proximity‐induced finite
Kristina Komander   +6 more
wiley   +1 more source

Astronomy events at Aschaffenburg University to attract future students

open access: yesActa Polytechnica
In 2023 the German Federal Ministry of Education and Research and the German organization for science communication “Wissenschaft im Dialog” jointly proclaimed a "Science Year 2023" in Germany with the motto “Our Universe”.
Thorsten Döhring   +3 more
doaj  

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