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Linear dependence of the Hall coefficient of 1% Na doped PbTe with varying magnetic field
Author(s) -
Brown David R.,
Pei Yanzhong,
Wang Heng,
Snyder G. Jeffrey
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201300118
Subject(s) - condensed matter physics , hall effect , seebeck coefficient , brillouin zone , electrical resistivity and conductivity , magnetic field , thermal hall effect , doping , materials science , physics , quantum mechanics
Heavily p‐doped PbTe is known to be a highly efficient thermoelectric material and theories explaining this have connected it to positive curvature in the Seebeck coefficient between 300 and 500 K and a peak in the Hall coefficient at 500 K due to band convergence. Recent work by Jaworski et al. has suggested that a pocket of high mobility electrons between the L and Sigma point in the Brillouin zone are responsible for these effects, inferred from an observed inversion of the Hall resistivity under small magnetic fields ( < 0.5 T). Here the Hall resistivity of 1% Na doped PbTe is measured in magnetic fields ranging from 0.1 to 2 T at 293 and 626 K and found to be linear without any inversion of Hall resistivity.