STM STUDY OF THE ADSORPTION OF SINGLE-MOLECULE MAGNETFe4ONBi(111)SURFACE

Yuan Luo, Lan Luo, Kai Sun, Min-Long Tao and Jun-Zhong Wang ()
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Yuan Luo: School of Physical Science and Technology, Southwest University, Chongqing 400715, P. R. China
Lan Luo: School of Physical Science and Technology, Southwest University, Chongqing 400715, P. R. China
Kai Sun: School of Physical Science and Technology, Southwest University, Chongqing 400715, P. R. China
Min-Long Tao: School of Physical Science and Technology, Southwest University, Chongqing 400715, P. R. China
Jun-Zhong Wang: School of Physical Science and Technology, Southwest University, Chongqing 400715, P. R. China

Surface Review and Letters (SRL), 2015, vol. 22, issue 05, 1-5

Abstract: Single-molecule magnets (SMMs) have unique magnetic properties such as quantum tunneling of magnetization and quantum coherent oscillation, which have potential applications in quantum computation and information storage. In this paper, using the tip-deposition method, we have grafted individualFe4molecules onto the semi-metallicBi(111)surface. Low temperature scanning tunneling microscope (LT-STM) was used to characterize the molecular morphology and electronic structures. It was found that individualFe4molecules reveal a triangle shape, which is consistent with the molecular structure ofFe4. Scanning tunneling spectroscopy (STS) analysis indicated that the HOMO–LUMO gap is 0.49 eV. These studies provide direct information about the adsorption of individual SMMs on semi-metal surfaces.

Keywords: Single-molecule magnet; Fe4; scanning tunneling microscope; semi-metallicBi(111); HOMO–LUMO gap (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1142/S0218625X15500602

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