Related Experiment Video
Updated: Feb 8, 2026
09:44
High-throughput Screening for Chemical Modulators of Post-transcriptionally Regulated Genes
Published on: March 3, 2015
10.0K
High-Throughput Screening of Spin Hall Conductivity in Two-dimensional Materials
Fu Li1, Xiaoxiong Liu2, Vikrant Chaudhary3
1Institute of Materials Science, Technology University of Darmstadt, 64287, Darmstadt, Germany.
Nano Letters
|February 6, 2026
Summary
Researchers discovered new 2D materials with a large spin Hall effect (SHE), crucial for spintronics. High-throughput calculations identified 6 promising materials with high spin Hall conductivity (SHC) for advanced electronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Mechanics
Background:
- Two-dimensional (2D) materials are key for next-generation spintronic devices.
- A large spin Hall effect (SHE) is desirable for efficient spintronics.
- Identifying materials with high spin Hall conductivity (SHC) is an ongoing challenge.
Purpose of the Study:
- To computationally screen a large database of 2D materials for high SHC.
- To identify novel 2D materials with potential for spintronics applications.
- To understand the underlying physical mechanisms responsible for large SHC.
Main Methods:
- High-throughput (HTP) calculations were performed on 4486 nonmagnetic compounds.
- Spin Hall conductivity (SHC) was computed for each material.
- Materials were analyzed for band structures, spin-orbit coupling (SOC), and symmetry properties.
Main Results:
- Six 2D materials with SHC exceeding 7.0 e/4π were identified, outperforming known materials.
- High SHC is linked to SOC-induced gap openings at Dirac-like band crossings.
- Mirror symmetry was found to enhance SHC.
- Fifty-seven topological insulators with quantized SHCs were discovered.
Conclusions:
- This study provides a rapid screening method for discovering 2D materials for spintronics.
- The identified materials and insights accelerate the development of novel spintronic devices.
- Experimental validation of these high SHC materials is the next crucial step.
Related Concept Videos
01:30The Hall Effect
4.4K
Edwin H. Hall, in the year 1879, devised an experiment that could be used to identify the polarity of the predominant charge carriers in a conducting material. From a historical perspective, this experiment was the first to demonstrate that the charge carriers in most metals are negative.
4.4K
01:08NMR Spectroscopy: Spin–Spin Coupling
3.3K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
3.3K
01:17Spin–Spin Coupling: One-Bond Coupling
1.5K
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
1.5K
01:08Spin–Spin Coupling Constant: Overview
1.5K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.5K
01:20Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)
1.7K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.7K
01:22Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)
1.5K
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
1.5K