Surface science at the PEARL beamline of the Swiss Light Source

Muntwiler, M.; Zhang, J.; Stania, R.; Matsui, F.; Oberta, P.; Flechsig, U.; Patthey, L.; Quitmann, C.; Glatzel, T.; Widmer, R.; Meyer, E.; Jung, T.A.; Aebi, P.; Fasel, R.; Greber, T.

doi:10.1107/S1600577516018646

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Figure 12
Self-assembled porous network of DCA molecules on Cu(111). (a) Wide-area STM topography scan (+2.0 V, 50 pA, 300 K). The inset shows the structural formula of DCA. (b) High-resolution STM topography image recorded with a DCA molecule attached to the STM tip (−0.5 V, 100 pA, 4.4 K). An (approximate) model of the molecular structure is overlaid. (c) $[{\rm d}I/{\rm d}V]$ spectra (metal tip, open feedback loop) at the positions marked in panel (b) (solid curves), and on clean Cu(111) (dashed curve). Positive voltage corresponds to unoccupied states. (d) $[{\rm d}I/{\rm d}V]$ map at +0.14 V showing the lateral distribution of the QWS (metal tip, open feedback loop). The image is slightly slanted due to a small drift during the scan which takes several hours.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 24| Part 1| January 2017| Pages 354-366

https://doi.org/10.1107/S1600577516018646

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