20.500.12556/DiRROS-23620 Atomic scale visualization of vibrational modes in armchair graphene nanoribbon Using scanning tunneling microscopy (STM) and inelastic tunneling spectroscopy, the low-frequency vibrational modes of a 7-atom wide armchair graphene nanoribbon (7-AGNR) is mapped. The inelastic tunneling channel is enhanced over the elastic one by a covalently bonded 7-AGNR to the apex of an STM tip. This setup has led to resonant inelastic tunneling between vibrational states of supported 7-GNR on Au(111) substrate and the states of the functionalized STM tip. The low-energy spectra reveal two localized peaks at the armchair edges with energies at ±14 and ±30 mV. The peaks are assigned to twice the energies of longitudinal compressive and shear-like modes of 7-AGNR, respectively. Remarkably, the well-separated peaks evolve rapidly into one broader peak toward the bulk of the ribbon due to scattering from substrate interactions. This suggests that edge state phonons are uniquely protected from the microenvironment and may have a profound effect on the transport properties of GNR devices. scanning tunneling microscopy inelastic tunneling spectroscopy armchair graphene nanoribbons nanotrakovi true false true Wiley ZDA Angleški jezik Slovenski jezik ©2025 The Author(s). Neznano 2025-09-12 09:35:45 2025-09-12 09:35:46 2025-10-24 03:54:41 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 11. 9. 2025; str. 1-7 iss. , [article no.] 2500203 Vol. 19 [in press] 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-05-26 0000-00-00 2025-08-17 620.3 1862-6270 10.1002/pssr.202500203 248621315 https://onlinelibrary.wiley.com/doi/10.1002/pssr.202500203 1 19f1ead9-8fab-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=34954 RAZ_Scepanovic_Stefan_2025.pdf RAZ_Scepanovic_Stefan_2025.pdf 1 810478FF5B67360125782DB36E7FF953 1c5100431b16ac707d6978d67bda6b50d839b8471c246076e0c664dc94f85aaf 6bd95203-8fab-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=34955 Institut Jožef Stefan 0 0 0