Thermoelectric Effect in Mott Variable-Range Hopping

被引：9

作者：

Yamamoto, Takahiro ^{[1
,2
]}

Ogata, Masao ^{[3
,4
]}

Fukuyama, Hidetoshi ^{[2
]}

机构：

[1] Tokyo Univ Sci, Dept Phys, Shinjuku Ku, Tokyo 1628601, Japan

[2] Tokyo Univ Sci, RIST, Shinjuku Ku, Tokyo 1628601, Japan

[3] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[4] Univ Tokyo, Trans Scale Quantum Sci Inst, Bunkyo Ku, Tokyo 1130033, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2022年 / 91卷 / 04期

关键词：

LOCALIZATION; TRANSPORT;

D O I：

10.7566/JPSJ.91.044704

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

On the basis of the Kubo-Luttinger linear response theory combined with the scaling theory of Anderson localization predicting the energy dependence of localization length near the mobility edge, we have studied the thermoelectric response of a disordered system exhibiting Mon variable-range hopping (VRH). We found that the low-temperature Seebeck coefficient for VRH conduction in a d-dimensional system varies as S proportional to Td/(d+1), which is different from the widely used expression, S proportional to T(d-1)/(d+1), based on the energy-independent localization length. It is seen that the low-T behavior of S(T) of the thiospinel CuCrTiS4 is in full agreement with the new scheme.

引用

页数：4

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