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As the bulk single-crystal MoN2/ReN2 with a layered structure was successfully synthesized in experiment, transition-metal dinitrides have attracted considerable attention in recent years. Here, we focus on rare-earth-metal (Rem) elements…

材料科学 · 物理学 2022-01-19 Yawei Yu , Xin Chen , Xiaobiao Liu , Jia Li , Biplab Sanyal , Xiangru Kong , François M. Peeters , Linyang Li

Two-dimensional (2D) ferromagnetic materials are considered as promising candidates for the future generations of spintronic devices. Yet, 2D materials with intrinsic ferromagnetism are scarce. High-throughput first-principles simulations…

材料科学 · 物理学 2022-11-15 R. Meng , L. M. C. Pereira , J. P. Locquet , V. V. Afanas'ev , G. Pourtois , M. Houssa

Two-dimensional materials that exhibit spontaneous electric polarization are of notable interest for functional materials. However, despite many two-dimensional polar materials are predicted in theory, the number of experimentally confirmed…

材料科学 · 物理学 2020-11-04 Weiwei Gao , James R Chelikowsky

The recent experimental discovery of intrinsic ferromagnetism in single-layer CrI3 opens a new avenue to low-dimensional spintronics. However, the low Curie temperature Tc=45 K is still a large obstacle to its realistic device application.…

材料科学 · 物理学 2019-06-26 Hongxing Li , Yuan-Kai Xu , Kang Lai , Wei-Bing Zhang

Two-dimensional (2D) ferromagnets (FMs) have attracted widespread attention due to their prospects in spintronic applications. Here we explore the electronic structure and magnetic properties of the bulk and monolayer of VBr$_{3}$ in the…

材料科学 · 物理学 2020-11-24 Lu Liu , Ke Yang , Guangyu Wang , Hua Wu

Magnetic two-dimensional materials have potential application in next-generation electronic devices and have stimulated extensive interest in condensed matter physics and material fields. However, how to realize high-temperature…

材料科学 · 物理学 2024-06-19 Panjun Feng , Shuo Zhang , Dapeng Liu , Miao Gao , Fengjie Ma , Xun-Wang Yan , Z. Y. Xie

The van der Waals material CrSBr stands out as a promising two-dimensional magnet. Especially, its high magnetic ordering temperature and versatile magneto-transport properties make CrSBr an important candidate for new devices in the…

Two-dimensional (2D) intrinsic ferromagnetic semiconductors are expected to stand out in the spintronic field. Recently, the monolayer VI$_{3}$ has been experimentally synthesized but the weak ferromagnetism and low Curie temperature…

材料科学 · 物理学 2020-04-22 Yulu Ren , Qiaoqiao Li , Wenhui Wan , Yong Liu , Yanfeng Ge

The recent observation of ferromagnetic order in two-dimensional (2D) materials has initiated a booming interest in the subject of 2D magnetism. In contrast to bulk materials, 2D materials can only exhibit magnetic order in the presence of…

材料科学 · 物理学 2020-02-18 Daniele Torelli , Kristian S. Thygesen , Thomas Olsen

We propose two-dimensional (2D) Ising-type ferromagnetic semiconductors TcSiTe3, TcGeSe3, and TcGeTe3 with high Curie temperatures around 200-0500 K. Owing to large spin-orbit couplings, the large magnetocrystalline anisotropy energy (MAE),…

材料科学 · 物理学 2020-01-07 Jing-Yang You , Zhen Zhang , Xue-Juan Dong , Bo Gu , Gang Su

Two-dimensional (2D) magnets exhibit unique physical properties for potential applications in spintronics. To date, most 2D ferromagnets are obtained by mechanical exfoliation of bulk materials with van der Waals interlayer interactions,…

For spintronics applications, it is highly desirable to realize highly-spin-polarized two-dimensional (2D) electron systems in electrically-controllable epitaxial ultrathin films on semiconductor substrates. Through systematic…

介观与纳米尺度物理 · 物理学 2019-06-12 Xiang-Bo Xiao , Bang-Gui Liu

Recently, two-dimensional materials and nanoparticles with robust ferromagnetism are even of great interest to explore basic physics in nanoscale spintronics. More importantly, room-temperature magnetic semiconducting materials with high…

材料科学 · 物理学 2018-03-23 Xi Chen , Zheng-Zhe Lin

Magnetic insulators are often antiferromagnetic (AFM) and layered AFM compounds usually show low ordering temperature. On the other hand, layered ferromagnetic (FM) insulators with high-TC are very rare although they could be quite useful…

材料科学 · 物理学 2018-11-12 Ke Yang , Feng-Ren Fan , Alessandro Stroppa , Hua Wu

Two-dimensional (2D) intrinsic ferromagnetic (FM) semiconductors are crucial to develop low-dimensional spintronic devices. Using density functional theory, we show that single-layer chromium trihalides (SLCTs) (CrX$_3$,X=F, Cl, Br and I)…

材料科学 · 物理学 2016-02-26 Wei-Bing Zhang , Qian Qu , Peng Zhu , Chi-Hang Lam

Atomically thin materials with coupled magnetic and electric polarization are critical for developing energy-efficient and high-density spintronic devices, yet they remain scarce due to often conflicting requirements of stabilizing both…

介观与纳米尺度物理 · 物理学 2024-12-09 Lihao Zhang , Xiaoyu Wang , Qi Li , Haibo Xie , Liangliang Zhang , Lei Zhang , Jie Pan , Yingchun Cheng , Zhe Wang

Recent discoveries of intrinsic two-dimensional (2D) ferromagnetism in insulating/semiconducting van der Waals (vdW) crystals open up new possibilities for studying fundamental 2D magnetism and devices employing localized spins. However, a…

Two-dimensional (2D) materials showing room-temperature magnetism and high coercivity are desired for combining magnetism with semiconducting properties useful for spintronics. In this work, the magnetic properties of the 1T phase of…

The recent discovery of magnetic ordering in two-dimension has lead to colossal efforts to find atomically thin materials that order at high temperatures. However, due to fundamental spin fluctuation in reduced dimension, the…

强关联电子 · 物理学 2023-05-02 Chandan K. Singh , Mukul Kabir

We investigate the emergence of ferromagnetism in the two-dimensional metal-halide CoBr$_2$, with a special focus on the role of electronic correlations. The calculated phonon spectrum shows that the system is thermodynamically stable…

强关联电子 · 物理学 2021-05-13 Hrishit Banerjee , Markus Aichhorn