Far-Infrared Near-Field Optical Imaging and Kelvin Probe Force Microscopy of Laser-Crystallized and -Amorphized Phase Change Material Ge

Autor: Julian, Barnett, Lukas, Wehmeier, Andreas, Heßler, Martin, Lewin, Julian, Pries, Matthias, Wuttig, J Michael, Klopf, Susanne C, Kehr, Lukas M, Eng, Thomas, Taubner
Rok vydání: 2021
Zdroj: Nano letters. 21(21)
ISSN: 1530-6992
Popis: Chalcogenide phase change materials reversibly switch between non-volatile states with vastly different optical properties, enabling novel active nanophotonic devices. However, a fundamental understanding of their laser-switching behavior is lacking and the resulting local optical properties are unclear at the nanoscale. Here, we combine infrared scattering-type scanning near-field optical microscopy (SNOM) and Kelvin probe force microscopy (KPFM) to investigate four states of laser-switched Ge
Databáze: OpenAIRE