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.
|頁（從 - 到）||573-576|
|期刊||Physica E: Low-Dimensional Systems and Nanostructures|
|發行號||1-2 SPEC. ISS.|
|出版狀態||Published - 2006 5月|
All Science Journal Classification (ASJC) codes