• Media type: E-Article
  • Title: Scanning tunneling microscopy with InAs nanowire tips
  • Contributor: Flöhr, Kilian [Author]; Sladek, Kamil [Author]; Gunel, Yusuf [Author]; Lepsa, Mihail Ion [Author]; Hardtdegen, Hilde [Author]; Liebmann, Marcus [Author]; Schäpers, Thomas [Author]; Morgenstern, Markus [Author]
  • imprint: American Institute of Physics, 2012
  • Published in: Applied physics letters 101(24), 243101 - (2012). doi:10.1063/1.4769450
  • Language: English
  • DOI: https://doi.org/10.1063/1.4769450
  • ISSN: 1077-3118; 0003-6951
  • Origination:
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  • Description: Indium arsenide nanowires grown by selective-area vapor phase epitaxy are used as tips for scanning tunneling microscopy (STM). The STM tips are realized by positioning the wires manually on the corner of a double cleaved gallium arsenide wafer with sub-μm precision and contacting them lithographically, which is fully compatible with further integrated circuitry on the GaAs wafer. STM images show a z noise of 2 pm and a lateral stability of, at least, 0.5 nm on a Au(111) surface. I(z) spectroscopy reveals an exponential decay indicating tunneling through vacuum. Subsequent electron microscopy images of the tip demonstrate that the wires are barely modified during the STM imaging.
  • Access State: Open Access