Imaging of Ti0.87O2 nanosheets using Scanning Tunneling Spectroscopy

Avijit Kumar, S.K. Chinnasamy Palanisamy, J.M. Boter, Chris Hellenthal, Johan E. ten Elshof, Henricus J.W. Zandvliet

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Abstract

We report scanning tunneling microscopy (STM) and spectroscopy (STS) measurements on single layer Ti0.87O2 nanosheets deposited on Pt(200 nm)/Si substrates. These nanosheets have a band gap of 3.8 eV and are virtually invisible in conventional STM images. However, an impressive contrast is observed in the di/dz map, which allows for a clear identification of the nanosheets. The di/dz signal is obtained by adding a high frequency, small amplitude modulation to the z-piezo using a lock-in amplifier.
Original languageUndefined
Pages (from-to)201-204
Number of pages4
JournalApplied surface science
Volume265
DOIs
Publication statusPublished - 2013

Keywords

  • METIS-295992
  • IR-89917

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