2010 Fiscal Year Final Research Report
Theoretical study of the Kondo effects in quantum dots and nanomaterials
| Project/Area Number |
20540319
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Condensed matter physics I
|
|---|
| Research Institution | Osaka City University |
|---|
Principal Investigator |
OGURI Akira Osaka City University, 大学院・理学研究科, 教授 (10204166)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NISHIKAWA Yunori 大阪市立大学, 大学院・理学研究科, 講師 (60373239)
|
|---|
| Research Collaborator |
HEWSON A.C. Imperial College, Department of Mathematics, Senior Research Investigator
TANAKA Yoichi 理化学研究所, 基礎科学特別研究員
SAKANO Rui 東京大学, 大学院・工学系研究科, 日本学術振興会特別研究員(PD)
SHIMAMOTO Masashi 大阪市立大学, 大学院・理学研究科, 大学院生
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Keywords | 量子ドット / 近藤効果 / 強相関電子 / 非平衡電流 / 超伝導 / 数値くりこみ群 / メゾスコピック系 / アンドレーエフ散乱 |
|---|
| Research Abstract |
We have studied many body effects on transport through quantum dots, realized in heterostructures, carbon nanotube, and so on. Specifically, we have investigated competition between Nagaoka ferromagnetism and Kondo effect taking place in triple dots. Furthermore, we have shown, using the numerical renormalization group approach, that interplays between the Josephson effect, Andreev resonance, and strong correlation provide interesting variations in the ground states. We have also studied the Kondo behavior of nonequilibrium transport, such as the shot noise and steady current.
|
