发布时间：

2025-04-30

论文名称：

Effective Zeeman splitting in bent lateral heterojunctions of graphene and hexagonal boron nitride: A new mechanism towards half-metallicity

发表刊物：

Physical Review B

摘要：

Low-dimensional half-metallic (HM) systems are invaluable for future spintronics.Yet a definitive experimental demonstration of HM characteristic in two-dimensional (2D) materials remains elusive. Here, we reveal that in recently synthesized graphene/hexagonal boron nitride (G/hBN) lateral heterojunctions, pronounced HM can be achieved by applying an in-plane bending. We demonstrate with generalized Bloch theorem that bending has strong influence on interfacial spin states, mimicking the Zeeman effect, which consequently leads to the desired HM phase with a sizable HM gap and excellent magnetic stability. Given recent experimental advances in fabrication of G/hBN heterostructures, this strain-driven HM phase may be practically accessible. The generalized Bloch theorem coupled with self-consistent charge density-functional tight binding is useful to model 2D structures under fundamental deformations, thus may boost the study of strain tunable electronic property of low-dimensional materials with inhomogeneous strain patterns.

合写作者：

Yue, L.; Seifert, G.; Chang, K.; Zhang, D.-B.

卷号：

96(20)

页面范围：

201403

是否译文：

否

发表时间：

2017-11-06