Layer-number-parity-dependent abnormal magnetic ordering in few-layer CrI3 on N-face AlN substrate
Abstract
The research about two-dimensional van der Waals magnetic materials has advanced the breakthroughs in ultrathin magnetic devices. We experimentally demonstrate that a single-crystal N-face AlN polar substrate can program layer-number-parity-dependent magnetic multistates and their evolution sequence in few-layer CrI3. In odd-layer samples, as 5L-CrI3/AlN, when μ0H sweeps from 3 to -3 T, the reflective magnetic circular dichroism signal evolves through distinct magnetic multistates (+ 5 → -1 → +1 → -5), where +1 corresponds to the moment of a spin-up monolayer. Thereby, we vertically program novel magnetic ground states and their evolution sequence via a simplified heterointerface. Our first-principles calculations attribute this effect to interfacial hole doping: it globally reconfigures the magnetic ground state of odd-layer CrI3 to a novel ferrimagnetic order, and spatially differentiates the interlayer exchange coupling and magnetic anisotropy between the surface/interfacial and interior layers. Our work advances the practical integration and design of two-dimensional magnetic devices with tailored functionalities.
Read the paper
Related studies
- In silico toxicology protocols
- QM7-X, a comprehensive dataset of quantum-mechanical properties spanning the chemical space of small organic molecules
- Quantum Informed Machine-Learning Potentials for Molecular Dynamics Simulations of CO2's Chemisorption and Diffusion in Mg-MOF-74
- In-silico strategies in nano-drug design: Bridging nanomaterials and pharmacological applications
- mRNA codon optimization with quantum computers
- The computational power of the human brain
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.