journal article·2013-01Open access

Imaging of Ti0.87O2 nanosheets using scanning tunneling spectroscopy

Avijit Kumar, Suresh Kumar C. Palanisamy, Jelmer M. Boter, Chris Hellenthal, Johan E. ten Elshof, Harold J.W. Zandvliet

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.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Electronic and Structural Properties of Oxides · Semiconductor materials and devices · Force Microscopy Techniques and Applications

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