Role of minority light holes in the Hall effect of pregraphitic carbons
(1991) Solid State Communications — Vol. 78, n° 11, p. 935-939 (1991)
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- Abstract
- Results on the temperature and magnetic field dependence of the Hall effect in pregraphitic pyrocarbons heat treated between 1700 degrees C and 2200 degrees C are presented. The experimental data are discussed in terms of the two-carrier-minority and majority holes-model. It is shown that this model is able to reproduce all the set of experimental data in the low temperature range. Best fit calculations clearly show that minority carriers play a significant role, especially at low temperature. The temperature dependence of the low field Hall coefficient: R/sub H0/ originates from that of the minority holes mobility, while the field dependence of R/sub H/ is due to the high mobility of those carriers. Hall effect measurements appear to be well suited for investigating properties of high mobility minority carriers in disordered graphite.
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Bayot, V., Piraux, L., Michenaud, J.-P., & Issi, J.-P. (1991). Role of minority light holes in the Hall effect of pregraphitic carbons. Solid State Communications, 78(11), 935-939. https://doi.org/10.1016/0038-1098(91)90210-M (Original work published 1991)