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Nodal-chain fermions, as novel topological states of matter, have been hotly discussed in non-magnetic materials. Here, by using first-principles calculations and symmetry analysis, we propose the realization of fully spin-polarized nodal…

Materials Science · Physics 2020-11-30 Haopeng Zhang , Xiaoming Zhang , Ying Liu , Xuefang Dai , Guang Chen , Guodong Liu

Here, we systematically investigate the structure, phase stability, half-metallicity, and topological electronic structure for a new topological spintronic material NaV2O4. The material has a tetragonal structure with excellent dynamical…

Materials Science · Physics 2021-02-24 Tingli He , Xiaoming Zhang , Tie Yang , Ying Liu , Xuefang Dai , Guodong Liu

Topological semimetals in ferromagnetic materials have attracted enormous attention due to the potential applications in spintronics. Using the first-principles density functional theory together with an effective lattice model, here we…

Materials Science · Physics 2019-06-12 Xiaodong Zhou , Run-Wu Zhang , Zeying Zhang , Da-Shuai Ma , Wanxiang Feng , Yuriy Mokrousov , Yugui Yao

Recently, magnetic topological semimetals have received a lot of attention due to their potential applications in the field of spintronics. By using first-principles calculations, we propose that two ferromagnetic spinel materials of X2MnO4…

Materials Science · Physics 2022-01-13 R. R. Kang , S. D. He , P. Zhou , L. Z. Sun

Spin-gapless semimetals (SGSMs), which generate 100\% spin polarization, are viewed as promising semi-half-metals in spintronics with high speed and low consumption. We propose and characterize a new $\mathbb{Z_{\mathrm{2}}}$ class of…

Materials Science · Physics 2020-01-14 Run-Wu Zhang , Zeying Zhang , Cheng-Cheng Liu , Yugui Yao

Manipulating the spin degrees of freedom of electrons affords an excellent platform for exploring novel quantum states in condensed-matter physics and material science. Based on first-principles calculations and analysis of crystal…

Materials Science · Physics 2021-05-12 Run-Wu Zhang , Da-Shuai Ma , Jian-Min Zhang , Yugui Yao

We report on the electronic and optical properties of two theoretically predicted stable spinel compounds of the form ZnB2O4, where B = Ni or Cu; neither compound has been previously synthesized, so we compare them to the previously studied…

Materials Science · Physics 2015-04-28 Maria Stoica , Cynthia S. Lo

We report the theoretical prediction of a new class of spintronic materials, namely bipolar magnetic semiconductor (BMS), which is also supported by our experimental data. BMS acquires a unique band structure with unequal band gaps for spin…

Applied Physics · Physics 2020-11-21 Jadupati Nag , Deepika Rani , Jiban Kangsabanik , P. D. Babu , K. G. Suresh , Aftab Alam

Half-metallicity (full spin polarization of the Fermi surface) usually occurs in strongly correlated electron systems. We demonstrate that doping a spin-density wave insulator in the weak-coupling regime may also stabilize half-metallic…

Strongly Correlated Electrons · Physics 2019-03-06 A. V. Rozhkov , A. L. Rakhmanov , A. O. Sboychakov , K. I. Kugel , F. Nori

Two-dimensional (2D) materials combined with the presence of surface nearly-free electrons (NFE) have been considered quite interesting platforms to be exploited for the development of 2D electronic devices. Further incorporation of foreign…

Materials Science · Physics 2023-12-13 P. H. Souza , J. E. Padilha , R. H. Miwa

Lorentz-violating type-II nodal lines exhibit attracting physical properties and have been hot discussed currently. However, their investigations have been mostly limited in nonmagnetic system because of lacking ideal spin-polarized…

Materials Science · Physics 2021-02-22 Tingli He , Xiaoming Zhang , Lirong Wang , Ying Liu , Xuefang Dai , Liying Wang , Guodong Liu

Nodal-line metals and semimetals, as interesting topological states of matter, have been mostly studied in nonmagnetic materials. Here, based on first-principles calculations and symmetry analysis, we predict that fully spin-polarized Weyl…

Materials Science · Physics 2019-03-13 Cong Chen , Zhi-Ming Yu , Si Li , Ziyu Chen , Xian-Lei Sheng , Shengyuan A. Yang

Methods to generate spin-polarised electronic states in non-magnetic solids are strongly desired to enable all-electrical manipulation of electron spins for new quantum devices. This is generally accepted to require breaking global…

The central target of spintronics research is to achieve flexible control of highly efficient and spin-polarized electronic currents. Based on first-principles calculations and k-p models, we demonstrate that Cu2S/MnSe heterostructures are…

Materials Science · Physics 2019-01-04 Yang Xue , Bao Zhao , Yan Zhu , Tong Zhou , Jiayong Zhang , Ningbo Li , Hua Jiang , Zhongqin Yang

Based on our experimental and theoretical studies, we report the identification of the quaternary Heusler alloy, CoRuVSi as a new member of the recently discovered spin semimetals class. Spin polarised semimetals possess a unique band…

Applied Physics · Physics 2023-01-18 Jadupati Nag , R. Venkatesh , Ajay Jha , Plamen Stamenov , P. D. Babu , Aftab Alam , K. G. Suresh

Nodal chain semimetals protected by nonsymmorphic symmetries are distinct from Dirac and Weyl semimetals, featuring unconventional topological surface states and resulting in anomalous magnetotransport properties. Here, we reveal that the…

We have employed first-principles electronic structure calculations to examine the hypothetical (but plausible) oxide spinel, LiCr2O4 with the d^{2.5} electronic configuration. The cell (cubic) and internal (oxygen position) structural…

Materials Science · Physics 2009-11-10 Markus Lauer , Roser Valenti , H. C. Kandpal , Ram Seshadri , .

Spintronics is expected as the next-generation technology based on the novel notch of spin degree of freedom of electrons. Half metals, a class of materials which behave as a metal in one spin direction and an insulator in the opposite spin…

Materials Science · Physics 2011-08-19 Xiao HU

Diamond-structure materials have been extensively studied for decades, which form the foundation for most semiconductors and their modern day electronic devices. Here, we discover a e$_g$-orbital ($d_{z^2}$,$d_{x^2-y^2}$ ) model within the…

Materials Science · Physics 2020-03-25 Wei Jiang , Huaqing Huang , Feng Liu , Jian-Ping Wang , Tony Low

The superconductor SnTaS$_{2}$ is theoretically predicted to be an intriguing topological nodal line semimetal without consideration of spin-orbit coupling. By carrying out angle-resolved photoemission (ARPES) and spin-resolved ARPES…

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