The heavy fluxonium at zero external flux has a long-lived state when coupled capacitively to any other system. We analyze it by projecting all the relevant operators into qutrit subspace, as this configuration corresponds second excited level. This becomes bound-state in continuum (BIC) coupling occurs an extended system supporting of modes. In case without noise, we find BIC lifetimes that ca...

Motivated by the potential for cuprate-like superconductivity in monolayer rare-earth nickelate superlattices, we study effects of crystal field splitting, lattice distortions and strain on charge, magnetic, orbital order undoped two-dimensional (2D) monolayers $R$NiO$_3$. We use a two-band Hubbard model to describe low-energy electron states, with correlations controlled effective $U$ Hund's $...

We derive $ab$ $initio$ low-energy effective Hamiltonians (LEH) for high-temperature superconducting (SC) copper oxides Bi$_2$Sr$_2$CuO$_6$ (Bi2201, $N_{\ell}=1$, $T_c^{\rm exp} \sim 10$ K), Bi$_2$Sr$_2$CaCu$_2$O$_8$ (Bi2212, $N_{\ell}=2$, 84$ HgBa$_2$CuO$_4$ (Hg1201, 90$ K) and CaCuO$_2$ (Ca11, $N_{\ell}=\infty$, 110$ with different experimental optimal SC transition temperature exp}$ number $...

We present the structural and magnetic properties of KNaCuP$_2$O$_7$ investigated via x-ray diffraction, magnetization, specific heat, $^{31}$P NMR $^{23}$Na measurements complementary electronic structure calculations. The temperature dependent susceptibility shift could be modeled very well by uniform spin-$1/2$ Heisenberg antiferromagnetic chain model with nearest-neighbour interaction $J/k_...

Abstract We consider two $$C_0$$ C 0 -semigroups on function spaces or, more generally, Banach lattices and give necessary sufficient conditions for the orbits of first semigroup to dominate second large times. As an important special case we $$L^2$$ ...

In this manuscript, we will study \({\tilde{o}}\)-convergence in (partially) ordered vector spaces and a kind of convergence space V. A V is called semi-order (in short space), if there exist an W operator T from into W. way, say that with respect to \(\{W, T\}\). net \(\{x_\alpha \}\subseteq V\) said be \({\{W,T\}}\)-order convergent \(x\in write \(x_\alpha \xrightarrow {\{W, T\}}x\)), wheneve...

Abstract We provide an abstract characterization for the Cuntz semigroup of unital commutative AI-algebras, as well a semigroups form $\operatorname {\mathrm {Lsc}} (X,\overline {\mathbb {N}})$ some $T_1$ -space X . In our investigations, we also uncover new properties that all AI-algebras satisfies.

Despite the recent discovery of superconductivity in Nd$_{1-x}$Sr$_{x}$NiO$_2$ thin films, absence and antiferromagnetism their bulk materials remain a puzzle. Here we report $^{1}$H NMR measurements on powdered Nd$_{0.85}$Sr$_{0.15}$NiO$_2$ samples by taking advantage enriched proton concentration after hydrogen annealing. We find large full width at half maximum spectrum, which keeps increasi...