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.

Magnetic bistability in a submonolayer of sublimated Fe4 single-molecule magnets / Malavolti, Luigi; Lanzilotto, Valeria; Ninova, Silviya; Poggini, Lorenzo; Cimatti, Irene; Cortigiani, Brunetto; Margheriti, Ludovica; Chiappe, Daniele; Otero, Edwige; Sainctavit, Philippe; Totti, Federico; Cornia, Andrea; Mannini, Matteo; Sessoli, Roberta. - In: NANO LETTERS. - ISSN 1530-6984. - STAMPA. - 15:(2015), pp. 535-541. [10.1021/nl503925h]

Magnetic bistability in a submonolayer of sublimated Fe4 single-molecule magnets

MALAVOLTI, LUIGI;LANZILOTTO, VALERIA;NINOVA, SILVIYA;POGGINI, LORENZO;CIMATTI, IRENE;CORTIGIANI, BRUNETTO;MARGHERITI, LUDOVICA;TOTTI, FEDERICO;MANNINI, MATTEO;SESSOLI, ROBERTA
2015

Abstract

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.
2015
15
535
541
Malavolti, Luigi; Lanzilotto, Valeria; Ninova, Silviya; Poggini, Lorenzo; Cimatti, Irene; Cortigiani, Brunetto; Margheriti, Ludovica; Chiappe, Daniele...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1013479
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