2011/12/31 by Y. Kim, Y. Ma, Yu‐Lu Ma +12
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Advanced NMR Techniques and Applications #Advancements in Battery Materials #Atomic physics #Condensed matter physics #Coupling (piping) #Electron #Field (mathematics) #Graphene research and applications #Graphite #Landau quantization #Magnetic field #Materials science #Optics #Phonon #Physics #Quantum mechanics #Raman scattering #Raman spectroscopy #Resonance (particle physics) #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.85.121403
published as Physical Review B, 85 121403(R) (2012) · 5 pages, 4 figures, 1 table
openalex publication_date 2012/03/12 · arxiv created 2012/03/13 · arxiv updated 2012/03/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We perform Raman scattering experiments on natural graphite in magnetic fields up to 45 T, observing a series of peaks due to interband electronic excitations over a much broader magnetic field range than previously reported. We also explore electron-phonon coupling in graphite via magnetophonon resonances. The Raman G peak shifts and splits as a function of magnetic field, due to the magnetically tuned coupling of the E2g optical phonons with the K- and H-point inter-Landau-level excitations. The analysis of the observed anticrossing behavior allows us to determine the electron-phonon coupling for both K- and H-point carriers. In the highest field range (>35 T) the G peak narrows due to suppression of electron-phonon interaction.