Results 91 to 100 of about 37,717 (312)
Advanced Materials, EarlyView.Dielectric dual gradient metasurfaces supporting quasi‐bound‐states‐in‐the‐continuum are leveraged to spatially encode both the spectral and coupling parameter space and demonstrate ultra‐strong coupling to an epsilon‐near‐zero mode in an ultra‐thin SiO2 layer.The platform achieves exceptional mode overlap, reaching a normalized coupling strength of η =
Enrico Baù +7 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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Symmetry breaking in Hamiltonian systems
Journal of Differential Equations, 1987 This paper is devoted to the question whether there exist T-periodic solutions of the Hamiltonian system \[ \dot p=-\frac{\partial H}{\partial q}+\epsilon h_ 1(t)\quad \dot q=\frac{\partial H}{\partial p}+\epsilon h_ 2(t), \] where \(\epsilon >0\) is small, \(h_ 1\) and \(h_ 2\) are T- periodic functions and the unperturbed system \((H_ 0)\) is ...
A. Ambrosetti +2 more
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Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet
Advanced Materials, EarlyView.Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens +8 more
wiley +1 more source
Self‐Cooling Molecular Spin Qudits
Advanced Materials, EarlyView.A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios +12 more
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An example in Hamiltonian dynamics
Communications in Analysis and MechanicsWe present an example of a three-degrees-of-freedom polynomial Hamilton function with a critical point characterized by indefinite quadratic part with a Morse index 2.
Henryk Żoła̧dek
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Advanced Nonlinear Studies, 2018 Let n≥2{n\geq 2} be an integer, P=diag(-In-κ,Iκ,-In-κ,Iκ){P=\mathrm{diag}(-I_{n-\kappa},I_{\kappa},-I_{n-\kappa},I_{\kappa})} for some integer κ∈[0,n]{\kappa\in[0,n]}, and let Σ⊂ℝ2n{\Sigma\subset{\mathbb{R}}^{2n}} be a partially symmetric compact ...
Liu Hui, Zhu Gaosheng
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Advanced Materials, EarlyView.We design and implement Au‐Cu co‐modified Zn3In2S6 catalyst with spatially decoupling charge carriers across bulk and surface sites, which effectively suppresses carrier recombination, drives surface hot electron accumulation and stabilizes intermediates for photocatalytic oxygen reduction. The optimized catalyst achieves an H2O2 evolution rate of 94.2
Xiaowen Ruan +10 more
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Numerical study of periodic Hamiltonian systems by means of associated point mappings [PDF]
, 1976 J. Bernussou, Liu Hsu
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Hamiltonian systems on submanifolds
Advanced Studies in Pure Mathematics, 2018 A constraint submanifold in a symplectic space after P.A.M. Dirac is determined locally by geometric restriction of the symplectic form to the constraint. The natural symplectic invariant associated to this restriction is the space of Hamiltonian vector fields which uniquely restrict to the solvable Hamiltonian ones on a constraint. By investigation of
Fukuda, T., Janeczko, S.
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