From surviving to thriving: How preferences shift in helping resource allocation.

The helper's allocation of helping resources to multiple recipients often involves a trade-off between equality and efficiency. This research examines how the condition of potential recipients ("survival" or "development") influences the preferences for helping resources allocation in terms of equality and efficiency. Through seven studies, including a field study (Study 6), we discovered that helpers show a higher preference for equality over efficiency when recipients are in a survival situation (i.

Effect of thickness and stacking order on Raman spectrum of layered CrCl.

Layer- and stacking-dependent physical properties discovered in van der Waals materials have attracted a lot of attention recently. In this work, we have investigated the Raman spectrum of layered magnetic CrClwith different atomic thickness and stacking order from first principles. Our study indicates Raman shift of3̄and2/phase is near degenerate except that the first and fourth Raman resonant modes exhibit a marked peak difference about 3 cm, which can be understood by stacking-dependent vibrational eigenvectors.

Engineering the ligand states by surface functionalization: a new way to enhance the ferromagnetism of CrI.

The newly discovered 2D magnetic materials provide new opportunities for basic physics research and device applications. However, their low Curie temperature (TC) is a common weakness. In this paper, by combining magnetic Hamiltonian, Wannier functions and first-principles calculations, we systematically study the magnetic properties of monolayer CrI3 functionalized with halogens.

Electronic Structure and Magnetic Anisotropy of Single-Layer Rare-Earth Oxybromide.

The discovery of intrinsic magnetism in two-dimensional (2D) limit has triggered increasing investigations in layered magnetic materials. However, most of the available candidates involves 3d transition metals, while the layered rare-earth magnetic materials are largely unexplored at present. Here, we proposed a series of 2D rare-earth magnetic semiconductors REOBr (RE = Tb, Dy, Ho, Er and Tm) with large magnetic moments and magnetic anisotropy energies using the PBE + method.

Spin-dependent Schottky barriers and vacancy-induced spin-selective ohmic contacts in magnetic vdW heterostructures.

2D ferromagnets, such as CrX (X = Cl, Br and I), have been attracting extensive attention since they provide novel platforms to fundamental physics and device applications. Integrating CrX with other electrodes and substrates is an essential step to their device realization. Therefore, it is important to understand the interfacial properties between CrX and other 2D materials.