Volume 90, Number 2, April 2010
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||19 April 2010|
Influence of carbon on intraband scattering in Mg(B1-xCx)2
Institute of Low Temperature and Structure Research, Polish Academy of Sciences - P.O. Box 1410, 50-950 Wrocław, Poland, EU
2 Laboratory for Solid State Physics, ETH Zurich - 8093 Zurich, Switzerland
Corresponding author: M.Matusiak@int.pan.wroc.pl
Accepted: 19 April 2010
We report data on the Hall coefficient (RH) of the carbon-substituted Mg(B1-xCx)2 single crystals with x in the range from 0 to 0.1. The temperature dependences of RH obtained for the substituted crystals differ systematically at low temperatures, but all of them converge to the value of 1.8 × 10-10 m3C-1 at room temperature. The RH(T) data together with results of the thermoelectric power and electrical-resistivity measurements are interpreted within a quasi-classical transport approach, where the presence of four different conducting sheets is considered. The main influence of the carbon substitution on the transport properties in the normal state is associated with enhanced scattering rates rather than modified concentration of charge carriers. Presumably the carbon substitution increases the electron-impurity scattering mainly in the π-band.
PACS: 72.15.Gd – Galvanomagnetic and other magnetotransport effects / 72.15.Jf – Thermoelectric and thermomagnetic effects / 74.70.Ad – Metals; alloys and binary compounds (including A15, MgB2, etc.)
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.