 Probing carbon isotope effects on the Raman spectra of graphene with different ¹³C concentrations by Bruno R. Carvalho and others

Publisher: doi.org/10.1103/PhysRevB.92.125406

Institutional repository: hdl.handle.net/1721.1/98418

Byline: Bruno R. Carvalho, Yufeng Hao, Ariete Righi, Joaquin F. Rodriguez-Nieva, Luigi Colombo, Rodney S. Ruoff, Marcos A. Pimenta, Cristiano Fantini. The publisher records publication on 8 September 2015.

Abstract: Raman bands D, G, G* and 2D were measured in graphene with differing carbon-13 concentrations and laser excitation energies; their frequency dependence on isotope mass followed a harmonic-oscillator relation.

Publisher Abstract, journals.aps.org/prb/abstract/10.1103/PhysRevB.92.125406 : the excitation-energy slopes of the G* and 2D Raman positions were unchanged across isotope concentrations; G and 2D linewidths were used to examine concentration-dependent phonon lifetimes. This is the verified abstract locator, not a reconstruction of inaccessible experimental settings.