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Title: Raman spectroscopy of graphite in high magnetic fields: Electron-phonon coupling and magnetophonon resonance

The magneto-Raman measurements of graphite were performed in a back-scattering Faraday geometry at temperature 10 K in magnetic fields up to 45 T. The experimental data reveal the rich structure of Raman-active excitations dominated by K-point massive electrons. At high magnetic fields the graphite E{sub 2g} Raman line shows complex multi- component behavior interpreted as magnetophonon resonance coupled electron-phonon modes at graphite’s K-point. Also we found the clear signature of the fundamental, strongly dumped, n=0 magnetophonon resonance associated with H point massless holes.
Authors:
;  [1] ; ; ;  [2] ;  [3] ; ;  [4]
  1. Florida State University/NHMFL, Tallahassee FL 32310 (United States)
  2. Department of Physics, Rice University, Houston TX 77251 (United States)
  3. Department of Materials Engineering, New Mexico Tech, Socorro NM 87801 (United States)
  4. Engineering Department, University of Cambridge, Cambridge CB3 0FA (United Kingdom)
Publication Date:
OSTI Identifier:
22261771
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1566; Journal Issue: 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BACKSCATTERING; ELECTRON-PHONON COUPLING; ELECTRONS; GRAPHITE; MAGNETIC FIELDS; RAMAN SPECTROSCOPY; RESONANCE