We report here results from experiments on low-frequency Raman scattering CdS microcrystals of various sizes embedded in a germanium dioxide glass matrix. observed peaks the region tail parts Rayleigh lines and we found that frequencies these were proportional to inverse microcrystal diameters size dependences peak shifts agreed fairly well with calculated based Lamb's theory. Furthermore, Raman-scattering spectra had characteristic polarization properties. Our show originates confined...

Raman-scattering spectra of LO-phonon modes in CdSe microcrystals various sizes a germanate glass matrix are measured. The frequency the peak shifts towards lower-frequency side and bandwidth broadens with decreasing microcrystal size. size dependences shift broadening agree those calculated on basis phonon confinement model. These results show that these originate from relaxation q-vector selection rule. From temperature dependence spectra, we find consists temperature-dependent intrinsic...

We design a Convolutional Neural Network (CNN) which studies correlation between discretized inverse temperature and spin configuration of 2D Ising model show that it can find feature the phase transition without teaching any priori information for it. also define new order parameter via CNN provides well approximated critical temperature. In addition, we compare activation functions convolution layer Rectified Linear Unit (ReLU) is important to detect model.

We present a deep neural network representation of the $\mathrm{AdS}/\mathrm{CFT}$ correspondence, and demonstrate emergence bulk metric function via learning process for given data sets response in boundary quantum field theories. The emergent radial direction is identified with depth layers, itself interpreted as geometry. Our provides data-driven holographic modeling strongly coupled systems. With scalar ${\ensuremath{\phi}}^{4}$ theory unknown mass coupling, curved spacetime black hole...

We report the experimental results of valence band offset at a ZnO/GaN (0001) heterointerface. The heterointerface is prepared by growing ZnO layer on GaN/Al2O3, in which epitaxially deposited plasma-assisted molecular-beam epitaxy, while GaN template metalorganic chemical-vapor deposition. Ex situ ultraviolet and x-ray photoelectron spectroscopy have been used to measure ΔEV. measurements are done before after Ar+ ion cleaning surfaces. Type-II alignments with offsets ΔEV=1.0 eV (before...

We introduce and study two classes of Hubbard models with magnetic flux or spin-orbit coupling, which have a flat lowest band separated from other bands by non-zero gap. the Chern number bands, find that it is zero for first class but can be non-trivial in second. also prove introduction on-site Coulomb repulsion leads to ferromagnetism both classes.

We apply the relation between deep learning (DL) and AdS/CFT correspondence to a holographic model of QCD. Using lattice QCD data chiral condensate at finite temperature as our training data, procedure holographically determines an emergent bulk metric neural network weights. The is found have both black hole horizon finite-height IR wall, so shares confining deconfining phases, signaling cross-over thermal phase transition In fact, quark antiquark potential calculated by turns out possess...

Omnidirectional (omni-) reflector and transmission filter optimized at a wavelength of 1.55 μm have been realized using Si/SiO2 one-dimensional photonic crystals (1D PCs). Photonic band structures in the PCs with without defect layer also analyzed. The 1D fabricated very large omnidirectional gaps (omni-PBGs), their measured reflectance spectra are good agreement calculated results. omni-PBG six-pair PC (no layer, filling factor η=0.406) exists normalized frequency range 0.223–0.297....

In this paper, we develop the self-learning Monte-Carlo (SLMC) algorithm for non-Abelian gauge theory with dynamical fermions in four dimensions to resolve autocorrelation problem lattice QCD. We perform simulations staggered and plaquette action by both hybrid (HMC) SLMC zero finite temperature examine validity of SLMC. confirm that can reduce time reproduce results from HMC. For runs, reproduces correct HMC, including higher-order moments Polyakov loop chiral condensate. Besides, our...

We have carried out a photoemission study using synchrotron radiation of dodecanethiolate- (DT-) passivated Au nanoparticles supported on the highly oriented pyrolytic graphite (HOPG) substrates. From detailed line-shape analyses, it is found that $4f$ core-level spectra DT-passivated HOPG substrates consist two components, which originate from inner atoms and surface bonded to passivants DT molecules. Furthermore, shift higher binding energy with decreasing nanoparticle diameter. attribute...

The Hubbard model on the kagom\'e lattice has highly degenerate ground states (the flat lowest band) in corresponding single-electron problem and exhibits so-called flat-band ferromagnetism many-electron as was found by Mielke. Here we study obtained adding extra hopping terms to above model. band becomes dispersive, there is no gap between other band. We prove that, at half-filling of band, this perturbed remain saturated ferromagnetic if nearly flat.

We propose a general way to construct an effective Hamiltonian in the Self-learning Monte Carlo method (SLMC), which speeds up simulations by training model uncorrelated configurations Markov chain. Its applications are, however, limited. This is because it not obvious find explicit form of Hamiltonians. Particularly, difficult make trainable Hamiltonians including many-body interactions. In order overcome this critical difficulty, we introduce Behler-Parrinello neural networks (BPNNs) as...

Cytochrome P450foxy (P450foxy, CYP505) is a fused protein of cytochrome P450 (P450) and its reductase isolated from the fungus Fusarium oxysporum , which catalyzes subterminal (ω‐1∼ω‐3) hydroxylation fatty acids. Here, we produced, purified characterized recombinant (rP450foxy) using Escherichia coli expression system. Purified rP450foxy was catalytically spectrally indistinguishable native protein, but most recovered in soluble fraction E. cells unlike membrane‐bound protein. The results...

We present an extension of Nagaoka's theorem in the SU($n$) generalization infinite-$U$ Hubbard model. It is shown that, when there exactly one hole, fully polarized states analogous to ferromagnetic SU(2) model are ground states. For a restricted class models satisfying connectivity condition, these unique up trivial degeneracy due symmetry. also give examples lattices which condition can be verified explicitly. The include triangular, Kagom\'e, and hypercubic...

We present the first rigorous example of Hubbard model in any dimensions which exhibits metallic ferromagnetism. The is a genuine with short-range hopping and on-site Coulomb repulsion, has multi single-electron bands. In limit where band gap repulsion become infinite, we prove that ground states are completely ferromagnetic at same time conducting.

In this paper we propose new algorithm to reduce autocorrelation in Markov chain Monte-Carlo algorithms for euclidean field theories on the lattice. Our proposing is Hybrid (HMC) with restricted Boltzmann machine. We examine validity of by employing phi-fourth theory three dimension. observe reduction both symmetric and broken phase as well. provides consistent central values expectation action density one-point Green's function ones from original HMC within statistical error. On other hand,...

Porous semiconductor compound nanoparticles have been prepared by a new technique utilizing electronic excitation. The porous structures are formed in GaSb particles, when vacancies efficiently introduced excitation and the particle size is large enough to confine vacancy clusters. capture cross section of surface layer particles for smaller than that interstitials. Under condition supersaturation core, produced through clusters void formation.

The generalized decoration-iteration transformation is adopted to treat exactly a hybrid model of doubly decorated two-dimensional lattices, which have localized Ising spins at their nodal lattice sites and itinerant electrons delocalized over pairs decorating sites. Under the assumption half filling each couple sites, investigated system exhibits remarkable spontaneous antiferromagnetic long-range order with an obvious quantum reduction staggered magnetization. It shown that critical...