Spin Chains with Highly Quantum Character through Strong Covalency in CaCrN.

The insulating transition metal nitride CaCrN consists of sheets of triangular [CrN] units with symmetry that are connected via quasi-1D zigzag chains. Due to strong covalency between Cr and N, Cr ions are unusually low-spin, and = 1/2. Magnetic susceptibility measurements reveal dominant quasi-1D spin correlations with very large nearest-neighbor antiferromagnetic exchange = 340 K and yet no sign of magnetic order down to = 0.

Nonrelativistic Spin Splitting at the Brillouin Zone Center in Compensated Magnets.

The nonrelativistic spin-splitting (NRSS) of electronic bands in "altermagnets" has sparked renewed interest in antiferromagnets (AFMs) that have no net magnetization. However, altermagnets with collinear and compensated magnetism are not the only type of NRSS AFMs. In this Letter, we identify the symmetry conditions and characteristic signatures of a distinct group of NRSS AFMs that go beyond the description of altermagnets.

Systems-chart approach to the design of spin relaxation times in molecular qubits.

Molecular qubits are a promising platform for future quantum information science technologies; however, to find success in novel devices requires that the molecules exhibit long spin relaxation times. Understanding and optimizing these relaxation times has been shown to be challenging and much experimental work has been done to understand how various chemical features of the molecular qubit influence relaxation times. Here we have curated a data set of relaxation times of metal complex molecular qubits and formulated systems design charts to provide a hierarchical organization of how chemical variables affect relaxation times known physical processes.

Exceptional hardness in multiprincipal element alloys via hierarchical oxygen heterogeneities.

Refractory multiprincipal element alloys (RMPEAs) are potential successors to incumbent high-temperature structural alloys, although efforts to improve oxidation resistance with large additions of passivating elements have led to embrittlement. RMPEAs containing group IV and V elements have a balance of properties including moderate ductility, low density, and the necessary formability. We find that oxidation of group IV-V RMPEAs induces hierarchical heterogeneities, ranging from nanoscale interstitial complexes to tertiary phases.

Coherent spin-control of = 1 vanadium and molybdenum complexes.

The burgeoning field of quantum sensing hinges on the creation and control of quantum bits. To date, the most well-studied quantum sensors are optically active, paramagnetic defects residing in crystalline hosts. We previously developed analogous optically addressable molecules featuring a ground-state spin-triplet centered on a Cr ion with an optical-spin interface.

Detrimental Increase of Spin-Phonon Coupling in Molecular Qubits on Substrates.

Molecular qubits are a promising platform for quantum information systems. Although single molecule and ensemble studies have assessed the performance of = 1/2 molecules, it is understood that to function in devices, regular arrays of addressable qubits supported by a substrate are needed. The substrate imposes mechanical and electronic boundary conditions on the molecule; however, the impact of these effects on spin-lattice relaxation times is not well understood.

Informatics-Based Learning of Oxygen Vacancy Ordering Principles in Oxygen-Deficient Perovskites.

Ordered oxygen vacancies (OOVs) in perovskites can exhibit long-range order and may be used to direct materials properties through modifications in electronic structures and broken symmetries. Based on the various vacancy patterns observed in previously known compounds, we explore the ordering principles of oxygen-deficient perovskite oxides with O stoichiometry to identify other OOV variants. We performed first-principles calculations to assess the OOV stability on a data set of 50 OOV structures generated from our bespoke algorithm.

The Role of the Nurse Scientist and Nursing Research Within a National Integrated Health Care System.

Nursing research provides knowledge that advances nursing science, practice, and health care with the vision to optimize the health and well-being of the population. In a medical center setting or health care organization, nurse scientists are needed to demonstrate new knowledge, innovation, and scholarship. Nursing research in health care organizations or medical centers are led mainly by nurse leaders with a Doctorate in Philosophy (PhD) or a Doctorate in Nursing Practice (DNP).

Influence of Composition and Structure on the Optoelectronic Properties of Photocatalytic BiNbOCl-BiGdOCl Intergrowths.

Mixed metal oxyhalides are an exciting class of photocatalysts, capable of the sustainable generation of fuels and remediation of pollutants with solar energy. Bismuth oxyhalides of the types BiMOX (M = Nb and Ta; X = Cl and Br) and BiAOX (A = most lanthanides; X = Cl, Br, and I) have an electronic structure that imparts photostability, as their valence band maxima (VBM) are composed of O 2p orbitals rather than X p orbitals that typify many other bismuth oxyhalides. Here, flux-based synthesis of intergrowth BiNbOCl-BiGdOCl is reported, testing the hypothesis that both intergrowth stoichiometry and M identity serve as levers toward tunable optoelectronic properties.

A correlated ferromagnetic polar metal by design.

Polar metals have recently garnered increasing interest because of their promising functionalities. Here we report the experimental realization of an intrinsic coexisting ferromagnetism, polar distortion and metallicity in quasi-two-dimensional CaCoO. This material crystallizes with alternating stacking of oxygen tetrahedral CoO monolayers and octahedral CoO bilayers.

Metallicity and chemical bonding in anti-anatase MoN.

Here we present a detailed analysis of the structure, bonding character, and electronic structure of anti-anatase β-MoN using density functional theory calculations. We analyze the crystal orbital Hamilton populations, phonon band structure, and electronic structure calculations to explain its low energy transport behavior. We further examine the electronic structures of (anti-)rutile and (anti-)anatase MX (X = N,O; = 1,2) M = Ti and Mo nitrides and oxides to show that the atomic structure of anti-anatase leads to metallic behavior independent of the metal and ligand chemistry.

Thermal multiferroics in all-inorganic quasi-two-dimensional halide perovskites.

Multiferroic materials, particularly those possessing simultaneous electric and magnetic orders, offer a platform for design technologies and to study modern physics. Despite the substantial progress and evolution of multiferroics, one priority in the field remains to be the discovery of unexplored materials, especially those offering different mechanisms for controlling electric and magnetic orders. Here we demonstrate the simultaneous thermal control of electric and magnetic polarizations in quasi-two-dimensional halides (K,Rb)MnCl, arising from a polar-antipolar transition, as evidenced using both X-ray and neutron powder diffraction data.

Out-of-plane ferroelectricity and robust magnetoelectricity in quasi-two-dimensional materials.

Thin-film ferroelectrics have been pursued for capacitive and nonvolatile memory devices. They rely on polarizations that are oriented in an out-of-plane direction to facilitate integration and addressability with complementary metal-oxide semiconductor architectures. The internal depolarization field, however, formed by surface charges can suppress the out-of-plane polarization in ultrathin ferroelectric films that could otherwise exhibit lower coercive fields and operate with lower power.

A Nursing Research Residency Experience.

Nursing research is essential to improving patient care, yet barriers may hinder bedside nurses from participating in research and evidence-based practice (EBP) activities. This article describes a nursing research residency program that aimed to inspire direct care nurses to participate in research and EBP projects. The program described may be a potential solution to bridge the gap between clinical work and research.

Associations and Predictive Pathways Between Shared Governance, Autonomy, Magnet Status, Nurse-Sensitive Indicators, and Nurse Satisfaction: A Multisite Study.

Background: Evidence is limited to the effects of shared governance (SG) and autonomy on nurse-sensitive indicators (NSIs).

Purpose: To explore the effects of SG, autonomy, and Magnet status on nurse and patient outcomes.

Methods: A cross-sectional survey study was conducted using a convenience sample of 404 nurses from 4 hospitals.

Phase Discovery and Selected Synthesis of Subvalent Niobium Tellurides Using a Polytelluride Flux Strategy.

Transition metal subchalcogenides involve electron-rich metals and can facilitate an in-depth understanding of the relationships among quantum properties such as superconductivity, charge density wave, and topological band structures. However, effective experimental routes toward synthesizing transition metal subchalcogenides are still lacking, hindering the development of new quantum materials. Herein, we propose a eutectic polytelluride flux strategy as an excellent solution to address phase discovery and crystal growth in transition metal subtelluride systems.

Effect of Octahedral Connectivity on the Negative Thermal Expansion of SrZrS.

Sulfide perovskites (ABX) are under increasing investigation for use in photovoltaic, optoelectronic, dielectric, and thermoelectric devices due to their favorable band gaps, dynamical properties, environmental stability, and structural diversity. A key material parameter to optimize in such devices is the constituent materials' coefficient of thermal expansion (CTE) in order to minimize thermomechanical stress during fabrication and operation. This can be done by avoiding materials that have large CTE mismatch or by compensating positive thermal expansion by including materials with negative thermal expansion (NTE).

Noncentrosymmetric γCsIO Obtained from IO Polyhedral Rearrangements in the Centrosymmetric βPhase.

We report the synthesis and optical properties of noncentrosymmetric (NCS) γCsIO that was obtained through IO polyhedral rearrangements from centrosymmetric (CS) β-CsIO. Trifluoroacetic acid (TFA) acts as a structure-directing agent and plays a key role in the synthesis. It is suggested that the function of TFA is to promote rearrangement reactions found in the organic synthesis of stereoisomers.

Barriers and facilitators influencing EBP readiness: Building organizational and nurse capacity.

Background: Organizational supported evidence-based practice (EBP) enables nurses to be change agents and impact patient outcomes. Globally, a multitude of barriers limits EBP implementation, evaluation, and dissemination, which include time constraints, staff, resource access, education, technology, and fiscal support. These barriers and other disenfranchising elements hinder nurses' ability to actualize EBP and change practice within their workplace.

From Heterostructures to Solid-Solutions: Structural Tunability in Mixed Halide Perovskites.

The stability, reliability, and performance of halide-perovskite-based devices depend upon the structure, composition, and particle size of the device-enabling materials. Indeed, the degree of ion mixing in multicomponent perovskite crystals, although challenging to control, is a key factor in determining properties. Herein, an emerging method termed evaporation-crystallization polymer pen lithography is used to synthesize and systematically study the degree of ionic mixing of Cs FA PbX (FA = formamidinium; X = halide anion, ABX ) crystals, as a function of size, temperature, and composition.

Large Exchange Coupling Between Localized Spins and Topological Bands in MnBi Te.

Magnetism in topological materials creates phases exhibiting quantized transport phenomena with potential technological applications. The emergence of such phases relies on strong interaction between localized spins and the topological bands, and the consequent formation of an exchange gap. However, this remains experimentally unquantified in intrinsic magnetic topological materials.