TY - JOUR
T1 - Thermopower anisotropy of lightly-doped and optimally-doped Bi 2Sr2-xLaxCaCu2O 8+δ single crystals
AU - Fujii, T.
AU - Terasaki, I.
AU - Matsuda, A.
PY - 2004/8/1
Y1 - 2004/8/1
N2 - In-plane and out-of-plane thermopowers have been measured for lightly-doped (insulating) and optimally-doped (superconducting) Bi2Sr 2-xLaxCaCu2O8+δ single crystals. The anisotropy of the thermopower Sc/Sab is very large in the superconducting samples, while it is close to unity in the insulating ones. The thermopower of the insulating samples increases in proportion to T, suggesting that the localized carriers around at (π/2,π/2) cause the variable range hopping transport.
AB - In-plane and out-of-plane thermopowers have been measured for lightly-doped (insulating) and optimally-doped (superconducting) Bi2Sr 2-xLaxCaCu2O8+δ single crystals. The anisotropy of the thermopower Sc/Sab is very large in the superconducting samples, while it is close to unity in the insulating ones. The thermopower of the insulating samples increases in proportion to T, suggesting that the localized carriers around at (π/2,π/2) cause the variable range hopping transport.
KW - Anisotropy
KW - Bi-2212
KW - La substitution
KW - Out-of-plane thermopower
KW - Parent insulator
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U2 - 10.1016/j.physc.2004.03.105
DO - 10.1016/j.physc.2004.03.105
M3 - Conference article
AN - SCOPUS:4444238116
VL - 408-410
SP - 674
EP - 676
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-4
T2 - Proceedings of the International Conference on Materials
Y2 - 25 May 2003 through 30 May 2003
ER -