Why a local moment induces an antiferromagnetic ordering: An RVB picture

Based on a Gutzwiller projected BCS wavefunction, it is shown that a local S=1/2 moment is present around a vacancy site (zinc impurity) in a form of staggered magnetic moments, which is a direct consequence of the short-ranged resonating-valence-bond (RVB) pairing in the spin background.Comment: 4 pages, 3 figure

3-(2-Amino­ethyl)-2-anilinoquinazolin-4(3H)-one methanol hemisolvate

The title methanol hemisolvated quinazolin-(3H)-one, C16H16N4O·0.5CH3OH, has an anilino substituent in the 2-position and an amino­ethyl substituent in the 3-position of the planar fused-ring system (r.m.s. deviation = 0.019 Å). The anilino N atom donates an intramolecular hydrogen bond to the amino­ethyl N atom. The mol­ecule and the solvent methanol mol­ecule are linked by N—H⋯N, N—H⋯O and O—H⋯O hydrogen bonds. The methanol mol­ecule is disordered over two equally occupied positions about a twofold rotation axis

A new class of fractional impulsive differential hemivariational inequalities with an application

We consider a new fractional impulsive differential hemivariational inequality, which captures the required characteristics of both the hemivariational inequality and the fractional impulsive differential equation within the same framework. By utilizing a surjectivity theorem and a fixed point theorem we establish an existence and uniqueness theorem for such a problem. Moreover, we investigate the perturbation problem of the fractional impulsive differential hemivariational inequality to prove a convergence result, which describes the stability of the solution in relation to perturbation data. Finally, our main results are applied to obtain some new results for a frictional contact problem with the surface traction driven by the fractional impulsive differential equation

catena-Poly[[silver(I)-μ-[N-(4-pyridyl­meth­yl)pyridine-4-carboxamide-κ2 N:N′]] nitrate monohydrate]

The title coordination polymer, {[Ag(C12H11N3O)]NO3·H2O}n, has a polycationic chain motif in which the Ag atom is bridged by the heterocyclic ligand; the Ag atom shows linear coordination. If the two long Ag⋯Onitrate inter­actions [2.794 (6) and 2.867 (5) Å] are regarded as bonds, the compound adopts a three-dimensional network structure. The water mol­ecule consolidates the network structure by forming hydrogen bonds, one to the polycationic chain and one to the nitrate anion

Security and Privacy on Generative Data in AIGC: A Survey

The advent of artificial intelligence-generated content (AIGC) represents a pivotal moment in the evolution of information technology. With AIGC, it can be effortless to generate high-quality data that is challenging for the public to distinguish. Nevertheless, the proliferation of generative data across cyberspace brings security and privacy issues, including privacy leakages of individuals and media forgery for fraudulent purposes. Consequently, both academia and industry begin to emphasize the trustworthiness of generative data, successively providing a series of countermeasures for security and privacy. In this survey, we systematically review the security and privacy on generative data in AIGC, particularly for the first time analyzing them from the perspective of information security properties. Specifically, we reveal the successful experiences of state-of-the-art countermeasures in terms of the foundational properties of privacy, controllability, authenticity, and compliance, respectively. Finally, we summarize the open challenges and potential exploration directions from each of theses properties