Enhancement of the thermoelectric figure of merit in a quantum dot due to the Coulomb blockade effect
文献类型：期刊论文
| 作者 | Liu, J ; Sun, QF ; Xie, XC |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2010 |
| 卷号 | 81期号:24 |
| ISSN号 | 1098-0121 |
| 关键词 | SILICON NANOWIRES OSCILLATIONS THERMOPOWER PERFORMANCE CONDUCTANCE DEVICES |
| 通讯作者 | Liu, J: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | The origin of the Hall effect in many itinerant ferromagnets is still not resolved with an anomalous contribution from the sample magnetization that can exhibit extrinsic or intrinsic behavior. We report the midinfrared (MIR) measurements of the complex Hall (theta(H)), Faraday (theta(F)), and Kerr (theta(K)) angles, as well as the Hall conductivity (sigma(xy)) in a SrRuO3 film in the 115-1400 meV energy range. The magnetic field, temperature, and frequency dependence of the Hall effect is explored. The MIR magneto-optical response shows very strong frequency dependence including sign changes. Below 200 meV, the MIR theta(H)(T) changes sign between 120 and 150 K, as is observed in dc Hall measurements. Above 200 meV, the temperature dependence of theta(H) is similar to that of the dc magnetization and the measurements are in good agreement with predictions from a band calculation for the intrinsic anomalous Hall effect (AHE). The temperature and frequency dependence of the measured Hall effect suggests that whereas the behavior above 200 meV is consistent with an intrinsic AHE, the extrinsic AHE may play an important role in the lower-energy response. |
| 资助信息 | Chinese Academy of Sciences; NSF-China [10525418, 10734110, 10821403]; National Basic Research Program of China [2009CB929100]; U.S. DOE [DE-FG02-04ER46124]; C-SPIN center in Oklahoma |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37450]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, J,Sun, QF,Xie, XC. Enhancement of the thermoelectric figure of merit in a quantum dot due to the Coulomb blockade effect[J]. PHYSICAL REVIEW B,2010,81(24). |
| APA | Liu, J,Sun, QF,&Xie, XC.(2010).Enhancement of the thermoelectric figure of merit in a quantum dot due to the Coulomb blockade effect.PHYSICAL REVIEW B,81(24). |
| MLA | Liu, J,et al."Enhancement of the thermoelectric figure of merit in a quantum dot due to the Coulomb blockade effect".PHYSICAL REVIEW B 81.24(2010). |
入库方式： OAI收割
来源：物理研究所
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