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Title: A nanoemitter based on a superconducting material

Abstract

The coherence of an electron beam is crucial for the performance of electron microscopy, coherent diffractive imaging, holography, and many other advanced instrumentation methods that rely on the phase coherence of electron waves. Here we present a reliable method for preparing a niobium nanoemitter, which is thermally and chemically stable. The tip apex is a (100) facet with a lateral dimension of ∼1 nm, surrounded by four (310) facets. Adsorption of one monolayer of noble gas, particularly Xe, onto the nanoemitter greatly enhances the emission current and current stability. This electron source will probably possess both spatial and temporal coherence if the emitter is cooled below the superconducting temperature.

Authors:
 [1];  [2]; ;  [1]; ; ;  [3]
  1. Institute of Physics, Academia Sinica, Nankang, Taipei, 115 Taiwan (China)
  2. (China)
  3. Department of Physics, National Taiwan Normal University, Taipei, 115 Taiwan (China)
Publication Date:
OSTI Identifier:
22590662
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 108; Journal Issue: 26; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ADSORPTION; CURRENTS; ELECTRON BEAMS; ELECTRON MICROSCOPY; ELECTRON SOURCES; EMISSION; HOLOGRAPHY; NIOBIUM; PERFORMANCE; RARE GASES; STABILITY

Citation Formats

Hou, Jin-Long, Department of Physics, National Taiwan Normal University, Taipei, 115 Taiwan, Chang, Wei-Tse, Hwang, Ing-Shouh, E-mail: ishwang@phys.sinica.edu.tw, Shih, Chih-Chiang, Yu, Yu-Fong, and Fu, Tsu-Yi. A nanoemitter based on a superconducting material. United States: N. p., 2016. Web. doi:10.1063/1.4954943.
Hou, Jin-Long, Department of Physics, National Taiwan Normal University, Taipei, 115 Taiwan, Chang, Wei-Tse, Hwang, Ing-Shouh, E-mail: ishwang@phys.sinica.edu.tw, Shih, Chih-Chiang, Yu, Yu-Fong, & Fu, Tsu-Yi. A nanoemitter based on a superconducting material. United States. doi:10.1063/1.4954943.
Hou, Jin-Long, Department of Physics, National Taiwan Normal University, Taipei, 115 Taiwan, Chang, Wei-Tse, Hwang, Ing-Shouh, E-mail: ishwang@phys.sinica.edu.tw, Shih, Chih-Chiang, Yu, Yu-Fong, and Fu, Tsu-Yi. 2016. "A nanoemitter based on a superconducting material". United States. doi:10.1063/1.4954943.
@article{osti_22590662,
title = {A nanoemitter based on a superconducting material},
author = {Hou, Jin-Long and Department of Physics, National Taiwan Normal University, Taipei, 115 Taiwan and Chang, Wei-Tse and Hwang, Ing-Shouh, E-mail: ishwang@phys.sinica.edu.tw and Shih, Chih-Chiang and Yu, Yu-Fong and Fu, Tsu-Yi},
abstractNote = {The coherence of an electron beam is crucial for the performance of electron microscopy, coherent diffractive imaging, holography, and many other advanced instrumentation methods that rely on the phase coherence of electron waves. Here we present a reliable method for preparing a niobium nanoemitter, which is thermally and chemically stable. The tip apex is a (100) facet with a lateral dimension of ∼1 nm, surrounded by four (310) facets. Adsorption of one monolayer of noble gas, particularly Xe, onto the nanoemitter greatly enhances the emission current and current stability. This electron source will probably possess both spatial and temporal coherence if the emitter is cooled below the superconducting temperature.},
doi = {10.1063/1.4954943},
journal = {Applied Physics Letters},
number = 26,
volume = 108,
place = {United States},
year = 2016,
month = 6
}
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