Electronic transport through suspended graphene nanoribbons using a scanning tunneling microscope
- Autores: Niklas Friedrich
- Directores de la Tesis: José Ignacio Pascual Chico (dir. tes.), Jose María Pitarque de la Torre (tut. tes.)
- Lectura: En la Universidad del País Vasco - Euskal Herriko Unibertsitatea ( España ) en 2022
- Idioma: inglés
- Programa de doctorado: Programa de Doctorado en Física de Nanoestructuras y Materiales Avanzados/Physics of Nanostructures and Advanced Materials por la Universidad del País Vasco/Euskal Herriko Unibertsitatea
- Materias:
- Enlaces
- Tesis en acceso abierto en: ADDI
- Resumen
In this thesis, I investigated the two-terminal electronic transport through individualspin-hosting graphene nanoribbons (GNRs) suspended between the tip and the substrate of a low-temperature scanning tunneling microscope. Three types of GNRs were investigated: a seven and a five-seven-five armchair graphene nanoribbon, both with substitutional boron doping and a hybrid structure of (3,1)-chiral graphene nanoribbons and iron porphyrin. The ribbons were fabricated in situ under ultra-high vacuum conditions using on-surface synthesis strategies and characterized by means of scanning tunneling microscopy and spectroscopy (STM and STS). Bond resolved low bias images using a CO-functionalized tip confirmed the atomic structure of the molecules. Selected ribbons were positioned in a free-standing configuration bridging STM tip and substrate by mechanical manipulation with the STM tip.
