Fabrication of single crystalline SmB6 nanocone arrays and investigation of their field emission properties

摘要

As a typcial kondo insulator, SmB6 has attracted most of attention in recent years. But their corresponding nanostructures are hard to fabricate due to the growth technique. In this paper, uniform SmB6 nanocone arrays have been successfully fabricated by a simple chemical vapor deposition (CVD) method. The field emission (FE) behaviors of SmB6 nanocone arrays were investigated to reveal their surface properties. FE measurement results show that SmB6 nanocone arrays have a low turn-on electric field of 1.84 V/μm (at 10 μA/cm2) and good emission stability, which may have potential applications in FE area.