Abstract
With the rise of topological insulator samarium hexaboride (SmB6), rare-earth hexaboride (RB6) nanowires are the focus of the second wave of a research boom. Recent research has focused on new preparation methods, novel electronic properties, and extensive applications. Here, we review the recent developments in RB6 nanowires in the past five years. Two main synthesis methods (chemical vapor deposition and high-pressure solid-state) of RB6 nanowires are introduced and compared. Moreover, their electronic transport, magnetic properties, and superconducting properties are revealed. Furthermore, the applications of RB6 nanowires are presented, including as field emitters, photodetectors, and in energy storage. Finally, we detail further research directions for RB6 nanowires.
Highlights
Rare-earth hexaborides (RB6 ) have received substantial attention thanks to their high electrical conductivity, high melting points, and high chemical stability
From 2016, the second wave of research boom of RB6 began as SmB6 proved to be a topological insulator, and researchers began to explore the difference in topological properties between nanowires and bulk single crystals [8]
We summarize the recent developments in RB6 nanowires
Summary
Rare-earth hexaborides (RB6 ) have received substantial attention thanks to their high electrical conductivity, high melting points, and high chemical stability. The emergent topological insulator has increased interest in samarium hexaboride (SmB6 ), which possesses both insulating bulk state and metallic surface state due to the inversion of the d and f bands. From 2016, the second wave of research boom of RB6 began as SmB6 proved to be a topological insulator, and researchers began to explore the difference in topological properties between nanowires and bulk single crystals [8]. Two main synthesis methods of RB6 nanowires are summarized Their electronic transport and magnetic properties are summarized. The applications of RB6 nanowires are presented, including as field emitters, photodetectors, and in energy storage. Sustainability 2021, 13, 13970 transport and magnetic properties are summarized. The applications of RB6 nan of 12 owires are presented, including as field emitters, photodetectors, and in energy storage
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