Category: 4. Physics

Analytical results

We consider porous materials that are homogeneous (i.e., whose properties are spatially uniform) and whose solid phase is assumed to be motionless. We define a reference coordinate system \(({\rm{O}}, {\bf{e}}_{1}, {\bf{e}}_{2},…

The model

We consider a superconductor with two coupled subsystems, referred to as bands, each with its own charge carriers. This model can describe not only two-band superconductors but also layered materials where the subsystems are spatially…

Details of the experiment

We use the same apparatus that we used in our previous work²⁰ to perform laser spectroscopy of an E2 transition in \({{\rm{H}}}_{2}^{+}\) and HD⁺. We prepare a cluster of trapped and sympathetically cooled molecular ions,…

Crystal structures

The crystal structure of the M₂B₂H₄ monolayer is illustrated in Fig. 1. Layered M₂B₂H₄ adopts a 3D hexagonal structure with a space group symmetry of P6/mmm, analogous to Mg₂B₂. Figure 1 presents the side view and top view of…

Overview of results

Given a QNN \(\hat{U}({\boldsymbol{\theta }})\) with L variational parameters θ = (θ₁, …, θ_L), we consider a supervised learning task involving N quantum data \({\{\vert {\psi }_{\alpha }\rangle \}}_{\alpha = 1}^{N}\),…

At a time of growing catastrophic risks posed by climate change, pandemics and advances in artificial intelligence (AI), and more than 30 years after the end of the cold war, many people consider nuclear weapons to be relics of the twentieth…

Structural studies

The sugarcane juice (ScJ)-mediated synthesis of pure and Mn-doped iron oxide nanoparticles (IONPs) with Mn concentrations of 0%, 5%, and 9% was confirmed by x-ray diffraction (XRD) analysis (Fig. 1a). The observed diffraction…

In light of this, Cs₃Cu₂I₅ thin films are prepared using single-source vacuum thermal evaporation. The homogeneous films prepared on quartz substrates exhibit orthorhombic structure at the growth temperature of 373 K (Supplementary Figs. S2–