Results 81 to 90 of about 37,694 (310)

N-Wave Equations with Orthogonal Algebras: Z_2 and Z_2 × Z_2 Reductions and Soliton Solutions

Symmetry, Integrability and Geometry: Methods and Applications, 2007
We consider N-wave type equations related to the orthogonal algebras obtained from the generic ones via additional reductions. The first Z_2-reduction is the canonical one.
Vladimir S. Gerdjikov, Nikolay A. Kostov, Tihomir I. Valchev   +2 more
doaj  

Structural schemes for hamiltonian systems

CoRR
35 pages, 7 ...
Clain, Stéphane, Franck, Emmanuel, Michel-Dansac, Victor   +2 more
openaire   +3 more sources

Ferromagnetism of Molecular Beam Epitaxy‐grown Ultra‐thin Cr2Ge2Te6 Films Down to the Monolayer Limit on Si Substrates

Advanced Materials, EarlyView.
Uniform monolayer Cr2Ge2Te6 films are achieved on Si substrates by molecular beam epitaxy. Intrinsic ferromagnetism with perpendicular magnetic anisotropy is established in the films by anomalous Hall effect and superconducting quantum interference device measurements, albeit with strong magnetic fluctuations characteristic of its 2D nature.
Pengfei Ji, Ruixuan Liu, Tianchen Zhu, Yang Chen, Yitian Tong, Jinxuan Liang, Yunhe Bai, Yunyi Zang, Zuhan Geng, Fangting Chen, Xiyu Hong, Jiatong Zhang, Luyi Yang, Qi‐Kun Xue, Ke He, Xiao Feng   +15 more
wiley   +1 more source

Maslov index of Hamiltonian systems

Electronic Journal of Differential Equations, 2004
10 pages.
openaire   +5 more sources

Uniaxial Stress Enhanced Anisotropic Magnetoresistance and Superconductivity in the Kagome Superconductor LaRu3Si2

Advanced Materials, EarlyView.
We identify strong anisotropy in the upper critical field and magnetoresistance in the kagome superconductor LaRu3Si2, revealing pronounced electronic anisotropy. Uniaxial stress enhances magnetoresistance and Tc, with a positive correlation suggesting an electronic pairing mechanism.
P. Kral, V. Sazgari, Y. Ge, O. Gerguri, M. Spitaler, J.N. Graham, H. Nakamura, M. Bartkowiak, S. Nakatsuji, H. Luetkens, G. Simutis, G. Xu, Z. Guguchia   +12 more
wiley   +1 more source

Helmholtz Theorem for Nondifferentiable Hamiltonian Systems in the Framework of Cresson’s Quantum Calculus

Discrete Dynamics in Nature and Society, 2016
We derive the Helmholtz theorem for nondifferentiable Hamiltonian systems in the framework of Cresson’s quantum calculus. Precisely, we give a theorem characterizing nondifferentiable equations, admitting a Hamiltonian formulation.
Frédéric Pierret, Delfim F. M. Torres
doaj   +1 more source

Existence of homoclinic orbits for unbounded time-dependent $p$-Laplacian systems

Electronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper, we consider the following ordinary $p$-Laplacian system \begin{equation} \frac{d}{dt}\big(|\dot u(t)|^{p-2}\dot u(t)\big)-\nabla K(t,u(t)) + \nabla W(t,u(t))=f(t),\tag{$HS$} \end{equation} where $t\in \mathbb{R}$ and $ p>1$.
Adel Daouas
doaj   +1 more source

Retraction Note: Proof of the Jacobian Conjecture in the Two-Dimensional Case and Global Isochronous Centers of Polynomial Hamiltonian Differential Systems [PDF]

, 2023
В. В. Амелькин
openalex   +1 more source

Chiral Altermagnetic Magnetoelectrics

Advanced Materials, EarlyView.
In this work, we introduce a previously unexplored class of magnetoelectric materials, which we term chiral altermagnetic magnetoelectrics, in which structural chirality and Néel‐vector‐driven polarization are intrinsically coupled in nonpolar altermagnetic systems.
Chengwu Xie, Weizhen Meng, Zhenzhou Guo, Xiaodong Zhou, Shifeng Qian, Tie Yang, Wenhong Wang, Zhenxiang Cheng, Xiaotian Wang   +8 more
wiley   +1 more source

Identification of port-Hamiltonian systems from frequency response data [PDF]

, 2020
Peter Benner, Pawan Goyal, Paul Van Dooren   +2 more
openalex   +1 more source