Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12728
Title: Growth of single-crystalline SmB6 nanowires and their temperature-dependent electron field emission
Authors: Xu, JQ
Zhao, YM
Ji, XH
Zhang, Q
Lau, SP 
Issue Date: 2009
Source: Journal of physics. D, Applied physics, 2009, v. 42, no. 13, e5415
Abstract: A facile catalysis-free method has been utilized to synthesize functional samarium hexaboride (SmB6) nanowires. Structural characterization shows that the nanowires are single-crystalline SmB6 with the [1 0 0] growth direction. These nanowires exhibit a low turn-on electric field of 4.2 V mu m(-1) based on the 10 mu A cm(-2) current density criterion at room temperature (RT). The effect of temperature on the field emission properties of the SmB6 nanowires has also been investigated. The turn-on field of the SmB6 nanowires is found to decrease from 4.2 to 2.7 V mu m(-1) (at 10 mu A cm(-2)); meanwhile, the estimated field enhancement factor increases from 2207 to 4741 clearly with an increase from RT to 573 K. This dependence might be due to the change in the effective work function of the nanowires with temperature.
Publisher: Institute of Physics Publishing
Journal: Journal of physics. D, Applied physics 
ISSN: 0022-3727
EISSN: 1361-6463
DOI: 10.1088/0022-3727/42/13/135403
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