Results 91 to 100 of about 12,584,112 (314)

High Performance Room Temperature Multiferroic Properties of w‐MnSe Altermagnet

Advanced Functional Materials, EarlyView.
Using first‐principles calculations, for the first time the Altermagneto‐Ferroelectric Coupling Effect (AFCE) is proposed, which enables control of both electric polarization and spin splitting in the band structure due to polyhedral rotations. This uncovers robust multiferroicity in wurtzite MnSe at room temperature, offering an exciting route for ...
Djamel Bezzerga, Imran Khan, Jisang Hong
wiley   +1 more source

Central Extensions of Finite Heisenberg Groups in Cascading Quiver Gauge Theories

, 2006
Many conformal quiver gauge theories admit nonconformal generalizations. These generalizations change the rank of some of the gauge groups in a consistent way, inducing a running in the gauge couplings.
Affleck, Aharony, Belov, Belov, Benjamin A. Burrington, Benvenuti, Benvenuti, Berenstein, Bertolini, Bertolini, Burrington, Burrington, Burrington, Franco, Franco, Gauntlett, Gukov, Herzog, Intriligator, Intriligator, James T. Liu, Klebanov, Klebanov, Klebanov, Leopoldo A. Pando Zayas, Martelli, Moore, Novikov, Pando Zayas, Pando Zayas   +29 more
core   +1 more source

Constant Enzymatic in situ Production of H2O2 for an Unspecific Peroxygenase by an l–Amino Acid Oxidase

Advanced Synthesis &Catalysis, EarlyView.
Abstract Unspecific Peroxygenases have been the subject of a lot of research in the recent past as they offer opportunities for green hydroxylation reactions using hydrogen peroxide (H2O2) as donor. A striking problem of UPOs is their low stability against their own co‐substrate H2O2. In order to prevent the deactivation, we developed an enzyme cascade
Simon Last, Tobias Heinks, Niklas Dietz, Simon Koopmeiners, Gabriele Fischer von Mollard, Martin J. Weissenborn, Jan von Langermann   +6 more
wiley   +1 more source

Some properties of H\"older surfaces in the Heisenberg group [PDF]

, 2012
It is a folk conjecture that for alpha > 1/2 there is no alpha-Hoelder surface in the subRiemannian Heisenberg group. Namely, it is expected that there is no embedding from an open subset of R^2 into the Heisenberg group that is Hoelder continuous of ...
Donne, Enrico Le, Züst, Roger
core   +1 more source

Heisenberg Hausdorff Dimensionof Besicovitch Sets

Analysis and Geometry in Metric Spaces, 2014
We consider (bounded) Besicovitch sets in the Heisenberg group and prove that Lp estimates forthe Kakeya maximal function imply lower bounds for their Heisenberg Hausdorff dimension.
Venieri Laura
doaj   +1 more source

Umbilic hypersurfaces of constant sigma-k curvature in the Heisenberg group

, 2015
We study immersed, connected, umbilic hypersurfaces in the Heisenberg group $H_{n}$ with $n$ $\geq $ $2.$ We show that such a hypersurface, if closed, must be rotationally invariant up to a Heisenberg translation.
Cheng, Jih-Hsin, Chiu, Hung-Lin, Hwang, Jenn-Fang, Yang, Paul   +3 more
core   +1 more source

Correlations in Magnetic Sub‐Domains as an Unconventional Phase Diagram for van der Waals Ferromagnets

Advanced Science, EarlyView.
An unconventional magnetic order is observed in exfoliated CrBr3 layers, characterized by vertically correlated planar magnetic sub‐domains. Magnetic force microscopy, ab initio calculations, and micromagnetic simulations indicate that these sub‐domains arise from stacking faults modifying interlayer exchange coupling.
Sergey Y. Grebenchuk, Magdalena Grzeszczyk, Zhaolong Chen, Makars Šiškins, Vladislav Borisov, Manuel Pereiro, Mikhail I. Katsnelson, Olle Eriksson, Kostya S. Novoselov, Maciej Koperski   +9 more
wiley   +1 more source

Benedicks’ theorem for the Heisenberg group [PDF]

Proceedings of the American Mathematical Society, 2010
If $f$ is a compactly supported function on the Heisenberg group and the group Fourier transform $\hat{f}( )$ is a finite rank operator for all $ $ then $f$ is the zero function.
P. K. Ratnakumar, E. K. Narayanan
openaire   +2 more sources

Biharmonic S-curves according to Sabban frame in Heisenberg group Heis³

Boletim da Sociedade Paranaense de Matemática, 2013
In this paper, we study biharmonic curves accordig to Sabban frame in the Heisenberg group Heis³. We characterize the biharmonic curves in terms of their geodesic curvature and we prove that all of  biharmonic curves are helices in the Heisenberg group ...
Talat Körpınar, Essin Turhan
doaj   +3 more sources

The logarithmic Sobolev inequality on the Heisenberg group and applications to the uncertainty inequality and heat equation

Journal of Inequalities and Applications
We consider the logarithmic Sobolev inequality on the Heisenberg group. One can derive the logarithmic Sobolev inequality from the Sobolev inequality, and we consider an application to the uncertainty inequality on the Heisenberg group. Moreover, one can
Takeshi Suguro
doaj   +1 more source