期刊
NANO LETTERS
卷 15, 期 1, 页码 535-541出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl503925h
关键词
Single molecule magnet; scanning tunneling microscopy; X-ray magnetic circular dichroism; density functional theory
类别
资金
- European Research Council through the Advanced Grant MolNanoMaS [267746]
- Italian MIUR through FIRB [RBAP117RWN, RBFR10OAI0]
- EC [31228]
- Ente Cassa di Risparmio di Firenze
- CINECA award under the ISCRA initiative
We demonstrate that Fe-4 molecules can be deposited on gold by thermal sublimation in ultra-high vacuum with retention of single molecule magnet behavior. A magnetic hysteresis comparable to that found in bulk samples is indeed observed when a submonolayer film is studied by X-ray magnetic circular dichroism. Scanning tunneling microscopy evidences that Fe-4 molecules are assembled in a two-dimensional lattice with short-range hexagonal order and coexist with a smaller contaminant. The presence of intact Fe-4 molecules and the retention of their bistable magnetic behavior on the gold surface are supported by density functional theory calculations.
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