Emergence of 2D high-temperature nodal-line half-metal in monolayer AgN

2020 ◽  
Vol 22 (46) ◽  
pp. 27024-27030
Author(s):  
Xin-Yang Li ◽  
Meng-Han Zhang ◽  
Miao-Juan Ren ◽  
Chang-Wen Zhang
Keyword(s):  
High Temperature ◽  
Nodal Line ◽  
Spintronic Devices ◽  
Half Metals ◽  
Quantum Properties ◽  
Half Metal

Nodal-line half-metals (NLHMs) are highly desirable for future spintronic devices due to their exotic quantum properties.

scholarly journals Spintronics: Large‐Spin‐Gap Nodal‐Line Half‐Metal and High‐Temperature Ferromagnetic Semiconductor in Cr 2 X 3 (X=O,S,Se) Monolayers (Adv. Electron. Mater. 1/2020)

2020 ◽  
Vol 6 (1) ◽  
pp. 2070001
Author(s):  
Jian‐Yong Chen ◽  
Xing‐Xing Li ◽  
Wen‐Zhe Zhou ◽  
Jin‐Long Yang ◽  
Fang‐Ping Ouyang ◽  
...  
Keyword(s):  
High Temperature ◽  
Nodal Line ◽  
Ferromagnetic Semiconductor ◽  
Spin Gap ◽  
Half Metal ◽  
Large Spin

Large‐Spin‐Gap Nodal‐Line Half‐Metal and High‐Temperature Ferromagnetic Semiconductor in Cr 2 X 3 (X=O,S,Se) Monolayers

2019 ◽  
Vol 6 (1) ◽  
pp. 1900490 ◽  
Author(s):  
Jian‐Yong Chen ◽  
Xing‐Xing Li ◽  
Wen‐Zhe Zhou ◽  
Jin‐Long Yang ◽  
Fang‐Ping Ouyang ◽  
...  
Keyword(s):  
High Temperature ◽  
Nodal Line ◽  
Ferromagnetic Semiconductor ◽  
Spin Gap ◽  
Half Metal ◽  
Large Spin

scholarly journals MnNBr Monolayer: A High‐Temperature Ferromagnetic Half‐Metal with Type‐II Weyl Fermions

2021 ◽  
Vol 15 (7) ◽  
pp. 2170027
Author(s):  
Yongting Shi ◽  
Lingjun Li ◽  
Xin Cui ◽  
Tielei Song ◽  
Zhifeng Liu
Keyword(s):  
High Temperature ◽  
Type Ii ◽  
Half Metal ◽  
Weyl Fermions

High-temperature Dirac half-metal PdCl3: a promising candidate for realizing quantum anomalous Hall effect

2018 ◽  
Vol 6 (38) ◽  
pp. 10284-10291 ◽  
Author(s):  
Ya-ping Wang ◽  
Sheng-shi Li ◽  
Chang-wen Zhang ◽  
Shu-feng Zhang ◽  
Wei-xiao Ji ◽  
...  
Keyword(s):  
High Temperature ◽  
Hall Effect ◽  
Single Layer ◽  
Anomalous Hall Effect ◽  
Two Dimensional ◽  
Promising Candidate ◽  
Ideal Candidate ◽  
Half Metal ◽  
Quantum Anomalous Hall Effect

Single-layer PdCl3, a new two-dimensional honeycomb metal–halogen lattice, is proposed as an ideal candidate for realizing both a Dirac half-metal and the quantum anomalous Hall effect.

scholarly journals Weyl fermions, Fermi arcs, and minority-spin carriers in ferromagnetic CoS2

2020 ◽  
Vol 6 (51) ◽  
pp. eabd5000
Author(s):  
Niels B. M. Schröter ◽  
Iñigo Robredo ◽  
Sebastian Klemenz ◽  
Robert J. Kirby ◽  
Jonas A. Krieger ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Surface States ◽  
Anomalous Hall Effect ◽  
Half Metallicity ◽  
Spintronic Devices ◽  
Topological Materials ◽  
Fermi Arcs ◽  
Half Metal ◽  
Minority Spin ◽  
Electron Pocket

Magnetic Weyl semimetals are a newly discovered class of topological materials that may serve as a platform for exotic phenomena, such as axion insulators or the quantum anomalous Hall effect. Here, we use angle-resolved photoelectron spectroscopy and ab initio calculations to discover Weyl cones in CoS2, a ferromagnet with pyrite structure that has been long studied as a candidate for half-metallicity, which makes it an attractive material for spintronic devices. We directly observe the topological Fermi arc surface states that link the Weyl nodes, which will influence the performance of CoS2 as a spin injector by modifying its spin polarization at interfaces. In addition, we directly observe a minority-spin bulk electron pocket in the corner of the Brillouin zone, which proves that CoS2 cannot be a true half-metal.

scholarly journals High Temperature Treatment of Diamond Particles Toward Enhancement of Their Quantum Properties

2020 ◽  
Vol 8 ◽  
Author(s):  
Marco D. Torelli ◽  
Nicholas A. Nunn ◽  
Zachary R. Jones ◽  
Thea Vedelaar ◽  
Sandeep Kumar Padamati ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Treatment ◽  
High Temperature Treatment ◽  
Quantum Properties ◽  
Diamond Particles

scholarly journals Theoretical Study of the Electronic Properties of X2YZ (X = Fe, Co; Y = Zr, Mo; Z = Ge, Sb) Ternary Heusler: Abinitio Study

2020 ◽  
Vol 62 (1) ◽  
pp. 1-14
Author(s):  
A. Maafa ◽  
H. Rozale ◽  
A. Oughilas ◽  
A. Boubaça ◽  
A. Amar ◽  
...  
Keyword(s):  
Density Functional ◽  
Heusler Alloys ◽  
Metallic Behavior ◽  
Functional Theory ◽  
Half Metallic ◽  
Spintronic Devices ◽  
Half Metals ◽  
Potential Applications ◽  
Small Band ◽  
Moderate Range

AbstractIn the purpose of exploring new Heusler alloys with different magnetic applications, we have employed first principles calculations method within density functional theory. After checking the structural stability of X2YZ Heusler alloys (X = Fe, Co; Y =Zr, Mo and Z = Ge, Sb), we found that Cu2MnAl type structure is more favorable for most compounds except for X2MoGe and Co2MoSb, were the Hg2CuTi structure is energetically more stable. The trends in magnetic and electronic structures can be predicted by the structure types as well as the different kinds of hybridizations between the constituents. Among the two series only two compounds were identified to be true half metals with potential applications in spintronic devices. While one compound was classified as a nonmagnetic semiconductor with a small band gap. For the rest of materials, we found that the metallic behavior is dominant. These materials show possible interesting features in technical applications as well. The effect of distortion on the magnetic properties of Co2ZrGe and Fe2ZrSb showed that the half metallic character was preserved within a moderate range of volume changes, which makes it possible to grow these materials as thin films with modern techniques.

Half-Metallic Ferromagnetic Oxides

MRS Bulletin ◽  
2003 ◽  
Vol 28 (10) ◽  
pp. 720-724 ◽  
Author(s):  
J.M.D. Coey ◽  
C.L. Chien
Keyword(s):  
Structural Defects ◽  
Point Contacts ◽  
Counter Electrodes ◽  
Half Metallicity ◽  
Polarized Electrons ◽  
Oxide Semiconductors ◽  
Spintronic Devices ◽  
Single Spin ◽  
Half Metals ◽  
Increasing Temperature

AbstractHalf-metals are unusual ferromagnets that have electrons at the Fermi level in a single spin state, either spin up or spin down. Of potential interest as sources and analyzers of polarized electrons in spintronic devices, they are usually identified from spin-dependent band-structure calculations. We present a classification scheme for half-metals and then discuss methods for measuring spin polarization based on point contacts or tunnel junctions with ferromagnetic or superconducting counter electrodes. Oxide examples include CrO2, the best-studied half-metal. The half-metallicity tends to be destroyed by increasing temperature and by structural defects. The half-metals that currently offer the best prospects for spintronics applications are those with the highest Curie temperatures, such as magnetite, Fe3O4, and perhaps oxide semiconductors such as Co-doped ZnO.

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