Gate-controlled skyrmion and domain wall chirality.

Magnetic skyrmions are localized chiral spin textures, which offer great promise to store and process information at the nanoscale. In the presence of asymmetric exchange interactions, their chirality, which governs their dynamics, is generally considered as an intrinsic parameter set during the sample deposition. In this work, we experimentally demonstrate that a gate voltage can control this key parameter.

Kinetics of Ion Migration in the Electric Field-Driven Manipulation of Magnetic Anisotropy of Pt/Co/Oxide Multilayers.

Magneto-ionics is a fast developing research field which opens the perspective of energy efficient magnetic devices, where the magnetization direction is controlled by an electric field which drives the migration of ionic species. In this work, the interfacial perpendicular magnetic anisotropy (PMA) of Pt/Co/oxide stacks covered by ZrO , acting as a ionic conductor, is tuned by a gate voltage at room temperature. A large variation of the PMA is obtained by modifying the oxidation of the cobalt layer through the migration of oxygen ions: the easy magnetization axis can be switched reversibly from in-plane, with under-oxidized Co, to in-plane, with over-oxidized Co, passing through an out-of-plane magnetization state.

Route towards efficient magnetization reversal driven by voltage control of magnetic anisotropy.

The voltage controlled magnetic anisotropy (VCMA) becomes a subject of major interest for spintronics due to its promising potential outcome: fast magnetization manipulation in magnetoresistive random access memories with enhanced storage density and very low power consumption. Using a macrospin approach, we carried out a thorough analysis of the role of the VCMA on the magnetization dynamics of nanostructures with out-of-plane magnetic anisotropy. Diagrams of the magnetization switching have been computed depending on the material and experiment parameters (surface anisotropy, Gilbert damping, duration/amplitude of electric and magnetic field pulses) thus allowing predictive sets of parameters for optimum switching experiments.

Factors Affecting Quality of Life Among the Elderly in Long-Term Care Hospitals.

Background: There are challenges in sustaining person-centered care in aged care settings. Key related issues of concern such as quality of life among the older people in long-term care hospitals and interactions with nursing staff have been described previously.

Purpose: This study was designed to explore the factors affecting quality of life among older people living in long-term care hospitals in South Korea.

Person-Centered Care, Job Stress, and Quality of Life Among Long-Term Care Nursing Staff.

Background: Although it has been established that person-centered care is an essential aspect in long-term care facilities, the relationship between person-centered care and job stress among nursing staff and the effect of this relationship on their quality of life are not clear.

Purpose: This study aims to investigate correlations among job stress, quality of life, and person-centered care of nurses as well as factors affecting the person-centered care abilities of nursing staff working at long-term care hospitals.

Methods: Nursing staff (N = 183) in three long-term care hospitals in South Korea completed a questionnaire on job stress, quality of life, and person-centered care.