Temperature-dependent electronic excitations in a 2D graphite layer

J. H. Ho, C. W. Chiu, C. L. Lu, M. F. Lin

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The low-frequency electronic excitations of a 2D graphite layer is studied within random-phase approximation. Temperature could induce free carriers and thus significantly changes low-energy excitation properties. There exist intraband and interband single-particle excitations (SPE) and collective excitations. Both intraband SPE and plasmon are purely caused by temperature. Electronic excitations strongly depend on temperature and momentum. The Fermi-momentum state only decay through the intraband e-h excitations. The decay rate of such state quickly grows as temperature increases. A single graphite layer quite differs from a 2D electron gas in electronic excitations and de-excitations.

Original languageEnglish
Pages (from-to)573-576
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume32
Issue number1-2 SPEC. ISS.
DOIs
Publication statusPublished - 2006 May 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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