Mechanism responsible for initiating carbon nanotube vacuum breakdown

We report a physical mechanism responsible for initiating a vacuum breakdown process of a single carbon nanotube (CNT) during field emission. A quasidynamic method has been developed to simulate the breakdown process and calculate the critical field, critical emission current density and critical te...

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Veröffentlicht in:	Physical review letters 2004-08, Vol.93 (7), p.075501.1-075501.4, Article 075501
Hauptverfasser:	HUANG, N. Y, SHE, J. C, CHEN, D. M, JUN CHEN, DENG, S. Z, XU, N. S, BISHOP, H, HUQ, S. E, WANG, L, ZHONG, D. Y, WANG, E. G
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Dielectric breakdown and space-charge effects Dielectric properties of solids and liquids Dielectrics, piezoelectrics, and ferroelectrics and their properties Exact sciences and technology Physics
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Beschreibung
Zusammenfassung:	We report a physical mechanism responsible for initiating a vacuum breakdown process of a single carbon nanotube (CNT) during field emission. A quasidynamic method has been developed to simulate the breakdown process and calculate the critical field, critical emission current density and critical temperature beyond which thermal runaway occurs before the CNT temperature reaches its melting point. This model is in good agreement with experiments carried out with a single CNT on a silicon microtip.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.93.075501