TY - JOUR
T1 - Thermal and electronic transport properties and two-phase mixtures in La a5/8-xPr xCa 3/8MnO 3
AU - Kim, K. H.
AU - Uehara, M.
AU - Hess, C.
AU - Sharma, P. A.
AU - Cheong, S. W.
PY - 2000/3/27
Y1 - 2000/3/27
N2 - We measured thermal conductivity κ, thermoelectric power S, and electric conductivity σ of La 5/8-xPr xCa 3/8MnO 3, showing an intricate interplay between metallic ferromagnetism (FM) and charge ordering (CO) instability. The change of zκ, S, and σ with temperature (r) and x agrees well with the effective medium theories for binary metal-insulator mixtures. This agreement clearly demonstrates that with the variation of T as well as x, the relative volumes of FM and CO phases drastically change and percolative metal-insulator transition occurs in the mixture of FM and CO domains.
AB - We measured thermal conductivity κ, thermoelectric power S, and electric conductivity σ of La 5/8-xPr xCa 3/8MnO 3, showing an intricate interplay between metallic ferromagnetism (FM) and charge ordering (CO) instability. The change of zκ, S, and σ with temperature (r) and x agrees well with the effective medium theories for binary metal-insulator mixtures. This agreement clearly demonstrates that with the variation of T as well as x, the relative volumes of FM and CO phases drastically change and percolative metal-insulator transition occurs in the mixture of FM and CO domains.
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U2 - 10.1103/PhysRevLett.84.2961
DO - 10.1103/PhysRevLett.84.2961
M3 - Article
AN - SCOPUS:3843149794
SN - 0031-9007
VL - 84
JO - Physical Review Letters
JF - Physical Review Letters
IS - 13
M1 - 2961
ER -