Time-domain terahertz spectroscopy of spin state transition in [Fe(NH2 − trz)3]2+ spin crossover compounds
| Autor: | Benjamin Viquerat, Marc Tondusson, Jean-François Létard, Jérôme Degert, Cindy Mauriac, Eric Freysz |
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| Rok vydání: | 2011 |
| Předmět: |
Range (particle radiation)
Physics and Astronomy (miscellaneous) Spin states Condensed matter physics Spin polarization Terahertz radiation Chemistry Physics::Optics 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 3. Good health 0104 chemical sciences Hysteresis Spin crossover Condensed Matter::Strongly Correlated Electrons 0210 nano-technology Absorption (electromagnetic radiation) Refractive index |
| Zdroj: | Applied Physics Letters. 99:061908 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | We have measured the evolution of the THz spectrum of iron(II) spin crossover compounds within the low-spin/high-spin thermal hysteresis loop in the 0.6–6 THz frequency range. This study enabled to follow both the variations of the refractive optical index and absorption during the spin state transition. Marked absorptions centered ∼2 – 3 THz and ∼5 THz shifting with the spin state are revealed. Our work provides a means to store optically information and to read it out in the THz domain and also offers indications about the structural evolution occurring during the spin state transition. |
| Databáze: | OpenAIRE |
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