Results 181 to 190 of about 746,739 (376)
Unconventional Topological Weyl Dipole Phonon
Advanced Science, EarlyView.A new higher‐order topological phonon state is proposed, which integrates an unconventional Weyl dipole phonon (a charge‐3 Weyl point and three charge‐1 Weyl points) with higher‐order topology. Moreover, the two Weyl dipoles in Y(OH)3 exhibit the sextuple‐helicoid surface and hinge boundary states from the nonzero topological charge (±6) and the ...
Jianhua Wang +7 more
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Advanced Science, EarlyView.Janus RhSeCl exhibits a facial heteroatom configuration and uniform anionic valences with Se and Cl in the −1 oxidation state, stabilizing the unique structure. The symmetry‐breaking nature enables promising nonlinear optical and optoelectronic performance, providing new insights into two–dimensional (2D) Janus materials and broadening their potential ...
Kefeng Liu +19 more
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On the adiabatic theorem for the Hamiltonian system of differential equations in the classical mechanics, I [PDF]
, 1961 Takashi Kasuga
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Advanced Science, EarlyView.Precise tuning of interlayer magnetic coupling in two‐dimensional bilayers enables control over altermagnetic and PT‐symmetric antiferromagnetic phases. This dual‐phase platform yields two intrinsic Hall responses: a Berry curvature–driven linear anomalous Hall effect and a quantum metric–induced second‐order nonlinear anomalous Hall effect ...
Zhenning Sun +5 more
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Systematic generation of Hamiltonian circuits [PDF]
, 1966 S. M. Roberts, Benito Flores
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Realization of Spin‐locked Acoustic Helical Landau Levels in both Hexagonal and Square Lattices
Advanced Science, EarlyView.Acoustic helical Landau levels rooted in quantum spin Hall systems are achieved by linearly increasing the local bandgap through the lifting of the double Dirac cone in acoustic crystals. Large‐area conveyance of acoustic energy facilitated by these helical Landau levels is demonstrated.
Yafeng Chen +5 more
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Topological Singularities and Edge‐State Coupling Enable Robust on‐Chip Slow Light
Advanced Science, EarlyView.This work demonstrates the first experimental observation of a topological quantum‐interference‐like effect in a 1D on‐chip system, utilizing two topological mechanisms for robust slow light. Topological charges ensure immunity to parameter deviations, while edge states provide robustness against disturbances.
Yuqian Wang +6 more
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On pre-Hamiltonian Cycles in Hamiltonian Digraphs
, 2014 Let $D$ be a strongly connected directed graph of order $n\geq 4$. In \cite{[14]} (J. of Graph Theory, Vol.16, No. 5, 51-59, 1992) Y. Manoussakis proved the following theorem: Suppose that $D$ satisfies the following condition for every triple $x,y,z$ of vertices such that $x$ and $y$ are non-adjacent: If there is no arc from $x$ to $z$, then $d(x)+d(y)
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