2013 Fiscal Year Final Research Report
Many-body wave function and collective dynamics of electrons in artificial atoms
| Project/Area Number |
23550025
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Nihon University |
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Principal Investigator |
SAKO Tokuei 日本大学, 理工学部, 准教授 (60361565)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 人工原子 / 量子ドット / フントの規則 / フェルミ孔 / 共役フェルミ孔 / 波動関数 / 配置間相互作用 / 電子相関 |
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| Research Abstract |
Artificial atoms or quantum dots, novel quantum systems confining a small number of electrons in a low-dimensional artificially-designed nanoscale potential well, play an essential role in the development of next generation devices operating under the principle of quantum mechanics, utilized in, such as, quantum computation and quantum telecommunication. Since the electronic properties of artificial atoms are known to depend strongly on their size and/or number of electrons, understanding their complicated electronic structure is one of the most fundamental and essential issues. In this direction the present study has focused on the origin of so-called Hund's rule and on the appearance of angular correlation in artificial atoms. An inherent hole in the spin-parallel singlet wave function has been identified and is called conjugate Fermi hole. It has been shown that the origin of Hund's rule and angular correlation can be rationalized on the basis of this conjugate-Fermi-hole concept.
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