Robust and Selective Switching of an FeIII Spin-Crossover Compound on Cu2N/Cu(100) with Memristance Behavior
| Autor: | Torben Jasper-Toennies, Felix Tuczek, Richard Berndt, Hanne Jacob, Sujoy Karan, Manuel Gruber |
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| Rok vydání: | 2017 |
| Předmět: |
Spin states
Condensed matter physics Spintronics Chemistry Mechanical Engineering Conductance Bioengineering 02 engineering and technology General Chemistry Substrate (electronics) 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences law.invention Chemical physics Spin crossover law Molecule General Materials Science Density functional theory Scanning tunneling microscope 0210 nano-technology |
| Zdroj: | Nano Letters. 17:6613-6619 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | The switching between two spin states makes spin-crossover molecules on surfaces very attractive for potential applications in molecular spintronics. Using scanning tunneling microscopy, the successful deposition of [Fe(pap)2]+ (pap = N-2-pyridylmethylidene-2-hydroxyphenylaminato) molecules on Cu2N/Cu(100) surface is evidenced. The deposited FeIII spin-crossover compound is controllably switched between three different states, each of them exhibiting a characteristic tunneling conductance. The conductance is therefore employed to readily read the state of the molecules. A comparison of the experimental data with the results of density functional theory calculations reveals that all Fe(pap)2 molecules are initially in their high-spin state. The two other states are compatible with the low-spin state of the molecule but differ with respect to their coupling to the substrate. As a proof of concept, the reversible and selective nature of the switching is used to build a two-molecule memory. |
| Databáze: | OpenAIRE |
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