Abstract
We have grown large single crystals of SrNbO3.4+d (d∼0.03) with n=5 in the homologous series SrnNbnO3n+2 by using a traveling solvent floating-zone method and measured resistivity, thermopower, and thermal conductivity along all crystallographic axes. The thermoelectric properties are found to be highly anisotropic, which reflects a quasi-one-dimensional electronic structure. In particular, the thermopower along the b axis is -170 μV/K at 300 K, which is 1 order of magnitude higher than the -15 μV/K along the a axis and -25 μV/K along the c axis. A possible origin of the high anisotropy in the thermopower is discussed in terms of dimensional crossover associated with a structural modification.
| Original language | English |
|---|---|
| Article number | 085118 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 84 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2011 Aug 23 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
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Anisotropic thermoelectric properties associated with dimensional crossover in quasi-one-dimensional SrNbO3.4+d (d∼0.03). / Kobayashi, Wataru; Hayashi, Yasuhiro; Matsushita, M.; Yamamoto, Y.; Terasaki, I.; Nakao, A.; Nakao, H.; Murakami, Y.; Moritomo, Y.; Yamauchi, H.; Karppinen, M.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 84, No. 8, 085118, 23.08.2011.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Anisotropic thermoelectric properties associated with dimensional crossover in quasi-one-dimensional SrNbO3.4+d (d∼0.03)
AU - Kobayashi, Wataru
AU - Hayashi, Yasuhiro
AU - Matsushita, M.
AU - Yamamoto, Y.
AU - Terasaki, I.
AU - Nakao, A.
AU - Nakao, H.
AU - Murakami, Y.
AU - Moritomo, Y.
AU - Yamauchi, H.
AU - Karppinen, M.
PY - 2011/8/23
Y1 - 2011/8/23
N2 - We have grown large single crystals of SrNbO3.4+d (d∼0.03) with n=5 in the homologous series SrnNbnO3n+2 by using a traveling solvent floating-zone method and measured resistivity, thermopower, and thermal conductivity along all crystallographic axes. The thermoelectric properties are found to be highly anisotropic, which reflects a quasi-one-dimensional electronic structure. In particular, the thermopower along the b axis is -170 μV/K at 300 K, which is 1 order of magnitude higher than the -15 μV/K along the a axis and -25 μV/K along the c axis. A possible origin of the high anisotropy in the thermopower is discussed in terms of dimensional crossover associated with a structural modification.
AB - We have grown large single crystals of SrNbO3.4+d (d∼0.03) with n=5 in the homologous series SrnNbnO3n+2 by using a traveling solvent floating-zone method and measured resistivity, thermopower, and thermal conductivity along all crystallographic axes. The thermoelectric properties are found to be highly anisotropic, which reflects a quasi-one-dimensional electronic structure. In particular, the thermopower along the b axis is -170 μV/K at 300 K, which is 1 order of magnitude higher than the -15 μV/K along the a axis and -25 μV/K along the c axis. A possible origin of the high anisotropy in the thermopower is discussed in terms of dimensional crossover associated with a structural modification.
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U2 - 10.1103/PhysRevB.84.085118
DO - 10.1103/PhysRevB.84.085118
M3 - Article
VL - 84
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 8
M1 - 085118
ER -