AUTHOR=Wang Jianhua , Wang Dandan 

TITLE=Two-dimensional spin-gapless semiconductors: A mini-review

JOURNAL=Frontiers in Chemistry

VOLUME=10

YEAR=2022

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.996344

DOI=10.3389/fchem.2022.996344

ISSN=2296-2646

ABSTRACT=<p>In the past decade, two-dimensional (2D) materials and spintronic materials have been rapidly developing in recent years. 2D spin-gapless semiconductors (SGSs) are a novel class of ferromagnetic 2D spintronic materials with possible high Curie temperature, 100% spin-polarization, possible one-dimensional or zero-dimensional topological signatures, and other exciting spin transport properties. In this mini-review, we summarize a series of ideal 2D SGSs in the last 3 years, including 2D oxalate-based metal-organic frameworks, 2D single-layer Fe<sub>2</sub>I<sub>2,</sub> 2D Cr<sub>2</sub>X<sub>3</sub> (X = S, Se, and Te) monolayer with the honeycomb kagome (HK) lattice, 2D CrGa<sub>2</sub>Se<sub>4</sub> monolayer, 2D HK Mn–cyanogen lattice, 2D MnNF monolayer, and 2D Fe<sub>4</sub>N<sub>2</sub> pentagon crystal. The mini-review also discusses the unique magnetic, electronic, topological, and spin-transport properties and the possible application of these 2D SGSs. The mini-review can be regarded as an improved understanding of the current state of 2D SGSs in recent 3 years.</p>