Mapping the spin states of surface deposited Fe(II) SCO Compounds by STM
Abstract
We describe a novel method for analyzing the spin states of surface deposited Fe(II) spin crossover (SCO) compounds. The talk focuses on the investigation of [FeII(L)2](BF4)2 (L=2,6-di(1H-pyrazol-1-yl)-4-(thiocyanatomethyl)pyridine)^1 and the comparison to a high spin compound with a similar coordination motif. Single molecules and small clusters were investigated on HOPG. We were able to show a strong current contrast for the different spin states using the CITS technique. Changes of the spin state from high- to low-spin state and vice versa were observed at room temperature. Switching was statistically distributed, indicating a widening of the spin transition compared to the bulk state.^2
^1 M. Haryono, et al., Eur. J. Inorg. Chem. 2009, 2136.
^2 M.S. Alam, et al., Angew. Chem. (2009) (accepted).
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 2010
- Bibcode:
- 2010APS..MARZ27006S