Theoretical study of focused field emission of electrons from a point source

Tekman, E.; Ciraci, S.; Baratoff, A.

doi:10.1103/physrevb.42.9221

Theoretical study of focused field emission of electrons from a point source

Tekman E., Ciraci S., Baratoff A.

Physical Review B, cilt.42, sa.14, ss.9221-9224, 1990 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 42 Sayı: 14
Basım Tarihi: 1990
Doi Numarası: 10.1103/physrevb.42.9221
Dergi Adı: Physical Review B
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
Sayfa Sayıları: ss.9221-9224
Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
Ankara Üniversitesi Adresli: Hayır

Özet

We clarify basic mechanisms for focused field emission of electrons from a point source. The effective potential barrier arising from the lateral confinement of current carrying states is shown to be essential for subband filtering. A hornlike opening at the emission plane further improves the collimation even if the transport is not adiabatic. We predict novel source- and field-dependent resonance effects which can affect the emission characteristics. © 1990 The American Physical Society.