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Concentration anomalies of the thermal conductivity in PbTe–PbSe semiconductor solid solutions
Author(s) -
Rogacheva E. I.,
Vodorez O. S.,
Nashchekina O. N.,
Dresselhaus M. S.
Publication year - 2014
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201350293
Subject(s) - impurity , semiconductor , solid solution , condensed matter physics , thermal conductivity , materials science , conductivity , lattice (music) , atmospheric temperature range , electrical resistivity and conductivity , thermal , thermodynamics , chemistry , physics , composite material , metallurgy , optoelectronics , organic chemistry , quantum mechanics , acoustics
Studies of the concentration (0–3 mol% PbSe) and temperature (250–670 K) dependences of the lattice thermal conductivity λ p in PbTe–PbSe semiconductor solid solutions have shown that in the range of 0.75–1.25 mol% PbSe an anomalous increase in λ p under increasing PbSe concentration takes place in the λ p isotherms, plotted as λ p / λ p0 , where λ p0 is the lattice thermal conductivity in the absence of PbSe. The observed effect is attributed to critical phenomena and self‐organization processes accompanying the transition from dilute solid solutions to an impurity continuum.