Self focusing of field emitted electrons at an ellipsoidal tip

Kyritsakis, A; Kokkorakis, GC; Xanthakis, JP; Kirk, TL; Pescia, D

dc.contributor.author	Kyritsakis, A	en
dc.contributor.author	Kokkorakis, GC	en
dc.contributor.author	Xanthakis, JP	en
dc.contributor.author	Kirk, TL	en
dc.contributor.author	Pescia, D	en
dc.date.accessioned	2014-03-01T01:34:35Z
dc.date.available	2014-03-01T01:34:35Z
dc.date.issued	2010	en
dc.identifier.issn	0003-6951	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20754
dc.subject	chemical interdiffusion	en
dc.subject	contact resistance	en
dc.subject	ohmic contacts	en
dc.subject	semiconductor-metal boundaries	en
dc.subject	silicon compounds	en
dc.subject	solid-state phase transformations	en
dc.subject	surface chemistry	en
dc.subject	titanium	en
dc.subject	tomography	en
dc.subject	transmission electron microscopy	en
dc.subject	wide band gap semiconductors	en
dc.subject	work function	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Electron path	en
dc.subject.other	Emission area	en
dc.subject.other	Emitted electron	en
dc.subject.other	Hemispherical cap	en
dc.subject.other	Needle axis	en
dc.subject.other	Self-focusing	en
dc.subject.other	Wentzel-Kramers-Brillouin method	en
dc.subject.other	Field emission	en
dc.subject.other	Needles	en
dc.title	Self focusing of field emitted electrons at an ellipsoidal tip	en
heal.type	journalArticle	en
heal.identifier.primary	10.1063/1.3462934	en
heal.identifier.secondary	http://dx.doi.org/10.1063/1.3462934	en
heal.identifier.secondary	023104	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	In models of field emission the needle is usually terminated by a hemispherical cap. Here we choose to terminate it with a hemiellipsoidal cap and use a three-dimensional Wentzel-Kramers-Brillouin method for the computations. This has two important consequences: as the ellipsoid becomes more elongated, (a) the effective emission area is decreased and (b) the quantum mechanically computed electron paths converge toward the needle axis. Both mechanisms produce a self-focusing of the field emitted electrons. (C) 2010 American Institute of Physics. [doi:10.1063/1.3462934]	en
heal.publisher	AMER INST PHYSICS	en
heal.journalName	Applied Physics Letters	en
dc.identifier.doi	10.1063/1.3462934	en
dc.identifier.isi	ISI:000279999800054	en
dc.identifier.volume	97	en
dc.identifier.issue	2	en