Accession Number : ADA191726

Title :   Electrical Conduction in Thin Film Carbons.

Descriptive Note : Rept. for 1 Sep 86-31 Aug 87,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s) : Sugihara, K ; Dresselhaus, M S

PDF Url : ADA191726

Report Date : 30 Oct 1987

Pagination or Media Count : 3

Abstract : The interaction between electrons and phonons in a thin carbon film is investigated. Sound wave propagation in a thin carbon film has a small sound velocity and small damping. The scattering of electrons by phonons associated with the Rayleigh wave is found to be responsible for the anomalous temperature dependence of the resistivity and for the negative magnetoresistance of pregraphitic carbons at low temperatures. Keywords: Low temperature conduction pregraphitic films, Rayleigh waves thin carbon film, Negative magnetoresistance pregraphitic carbons.

Descriptors :   *CARBON, *CONDUCTIVITY, *THIN FILMS, ACOUSTIC VELOCITY, ANOMALIES, DAMPING, ELECTRICAL CONDUCTIVITY, ELECTRONS, LOW TEMPERATURE, MAGNETORESISTANCE, PHONONS, RAYLEIGH WAVES, RESISTANCE, SCATTERING, SOUND TRANSMISSION, SOUND WAVES, TEMPERATURE

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE