The computational scheme can easily be extended to second-order Raman bands of twisted bilayer graphene as well. The obtained theoretical predictions can be used for characterization of twisted bilayer graphene samples, using experimental Raman data.doi:10.1002/jrs.5189Valentin N. PopovJournal of Raman Spectroscopy
The vibrational properties of twisted bilayer graphene (tBLG) show complex features, due to the intricate energy landscape of its low-symmetry configurations. A machine learning-based approach is developed to provide a continuous model between the twist angle and the simulated Raman spectra of tBLGs...
G. Raman spectroscopy of twisted bilayer graphene. Solid State Commun. 175, 3–12 (2013). Article CAS Google Scholar Li, H. et al. Thermal conductivity of twisted bilayer graphene. Nanoscale 6, 13402–13408 (2014). Article CAS Google Scholar Yu, H., Liu, G.-B., Tang, J., Xu,...
The simplest forms of rhombohedrally stacked graphene layers: Bernal bilayer and “ABC” trilayer have been studied almost since the discovery of graphene [16]. Recently, unconventional superconductivity [6] and Stoner type spin and valley magnetism [5] were discovered in trilayer. The growing ...
(1+3)LG is ~18 cm−1, broader than the ~12 cm−1intrinsic in pristine SLG30,31. Closer inspection shows that the G band consists of two sub-bands, which we call G−and G+, using a similar terminology to that used in strained graphene32. However, the G peak of t(1+3...
Twisted bilayer grapheneMoire patternResonance Raman spectroscopyA resonant Raman study of twisted bilayer graphene (TBG) samples with different twisting angles using many different laser lines in the visible range is presented. The samples were fabricated by CVD technique and transferred to Si/SiO 2 ...
grapheneRaman spectraLayered two-dimensional crystal systems can exhibit complex interlayer interactions, which are influenced by local crystal structure and/or electronic variations. Here, we study the influence of defects in twisted bilayer graphene (TBG) using Raman spectroscopy. We explore the varied...
Raman spectroscopy is a very useful tool to study graphene, since it furnishes information about the atomic structure, presence of disorder, number of layers, charge transfer and strain. However, important information about electrons can be also obtained in aMA Pimenta...
Twisted bilayer graphene, in which interlayer interaction plays a critical role in this coupled system, is characterized for its angle-dependent electronic and optical properties. Here, we present a systematic Raman study of single-crystal twisted bilayer graphene grains, with the spectra of each ...
The Raman spectra of large-size, single-crystal, twisted bilayer graphene (tBLG) grains grown by chemical vapor deposition (CVD) are measured as a function of the rotation angle. The rotation angle between the graphene layers is determined using a combination of transmission electron microscopy (...