Single molecule tunneling spectroscopy investigation of reversibly switched dipolar vanadyl phthalocyanine on graphite

Journal Article · Mon Mar 17 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4869115· OSTI ID:22257725

Zhang, Jialin ^[1]; Wang, Zhunzhun; Li, Zhenyu ^[2]; Niu, Tianchao ^[3]; Chen, Wei ^[1]

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1. Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542 (Singapore)
2. Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026 (China)
3. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore)

We report a spatially resolved scanning tunneling spectroscopy (STS) investigation of reversibly switchable dipolar vanadyl phthalocyanine (VOPc) on graphite by using low temperature scanning tunneling microscopy. VOPc molecule can be switched between O-up and O-down configurations by changing the polarity of the pulse voltage applied to the tip, actuated by the inelastic tunneling electrons. The spatially resolved STS measurements allow the identification of the electronic structures of VOPc with different dipole orientation. The present approach provides geometry images and electronic characterization of a molecular switch on surface spontaneously.

• OSTI ID: 22257725
• Journal Information: Applied Physics Letters, Vol. 104, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRONIC STRUCTURE
GRAPHITE
PHTHALOCYANINES
SCANNING TUNNELING MICROSCOPY
SPECTROSCOPY
SWITCHES
TUNNEL EFFECT